Question

-==||WILL FAN AND MEDAL NEED HELP ASAP!||==-Need help on my math test! (5 Questions)

1. What is the solution to the equation?

7x + 6 = –22

A. x = -64/7

B. x = –4

C. x = -16/7

D. x = 4

2. What is the solution to the equation?

4y – 12 = –4

A. y = 11

B. y = 2

C. y = –4

D. y = –13


3. What is the solution to the equation?
3 - z/4 = 8

A. z = –44

B. z = –20

C. z = 20

D. z = 44


4. What is the solution to the equation?

8 + 4s – 2s = 16

A. s = –12

B. s = –4

C. s = 4

D. s = 12

Answer 1

5. What is the solution to the equation?

–4q + 8 = –2q – 16

A. q = –12

B. q = –4

C. q = 4

D. q = 12

Answer 2

@Shrek_Wazowski try to post one question at a time. it might be easier for us.

what's the first thing you need to do? for \(\color{#0cbb34}{\text{Originally Posted by}}\) @Shrek_Wazowski
5. What is the solution to the equation?

–4q + 8 = –2q – 16

A. q = –12

B. q = –4

C. q = 4

D. q = 12
\(\color{#0cbb34}{\text{End of Quote}}\)

Answer 3

Okay :D

Answer 4

so our first step is that we need to get q by itself have an idea of how to do that?

Answer 5

No v.v We just got into this Unit and I'm still confused by all of it..

Answer 6

ok cool.. well we need to get all the q's on the same side. whenever we have an equation what we do to one side we do to the other.

to get variables on the same side we must do the opposite operation. if we've got addition we subtract from both sides and vise versa

make sense?

Answer 7

Okay its making more sense now :D

Answer 8

A much more simple example

say we have

x+3 = 5

I know, it's looks trivial but see if you can apply what I said to this.

Answer 9

So 'x' would be 2in that situation

Answer 10

yes but how did you go about doing that?

Answer 11

Did th eoppostie of what the equation said so if it was x + 3 = 5 I did x - 3 = 5

Answer 12

exactly. so this is the logic you need to use in order to to these problems

Answer 13

So if its multiplying it would be dividing to get tha answer and if it was subtracting it would be adding..

Answer 14

Look at this

x-3 = 5
+3 +3

x = ?

Answer 15

x equals 2

Answer 16

Note how Photon is isolating x on the left side. To do this, he is adding 3 to both sides.

Can you finish this?

Answer 17

5 + 3 = ? (It's not 2.)

Answer 18

5 + 3 = 8

Answer 19

yeah so that is the point of this @Shrek_Wazowski got x by itself

Answer 20

Okay its making a lot more sense now :D

Answer 21

so in the problem you posted \(\color{#0cbb34}{\text{Originally Posted by}}\) @Shrek_Wazowski

This is a little more complicated, but we must get all of the Q terms on the same side of the equation, any ideas?


5. What is the solution to the equation?

–4q + 8 = –2q – 16

A. q = –12

B. q = –4

C. q = 4

D. q = 12
\(\color{#0cbb34}{\text{End of Quote}}\)

Answer 22

-4 - 8 = -2 + 16 ?

Answer 23

okay yeah you could subtract 8 from both sides

but make sure you do it like this

make sure you keep the variables in there too.

-4q+8 = -2q-16
-8 +8

Answer 24

sorry that should be

-4q+8 - 2q-16-8
-8

Answer 25

Okay so you would do -4 + 8 -8 - 2 - 16 - 8

Answer 26

yes! @Shrek_Wazowski but make sure you keep the variable signs in there too so what does this simplify to so far?

-4q+8-8 = -2q-16-8

Answer 27

Okay so I got -30.. e.o

Answer 28

so 8-8 =0 so that's gone.

so we're left with -4q = -2q-16-8

do you know how to subtract negative numbers?

Answer 29

Yes so -4q = -2 - 16 - 8?

Answer 30

*-2q

Answer 31

YEP keep going

Answer 32

Okay so -4q = -26q ?

Answer 33

@Shrek_Wazowski remember you need to incude the variables

Answer 34

-4q = -2q-16-8

-4q = -2q-24

Answer 35

so -4 = -2q - 16

Answer 36

-16-8 = -24

Answer 37

so it becomes

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Photon336
-4q = -2q-16-8

-4q = -2q-24
\(\color{#0cbb34}{\text{End of Quote}}\)

Answer 38

Ooh so -4q = -2q-24

Answer 39

yes :) do you understand it though?

Answer 40

80/100 :D

Answer 41

okay so let's bring all the q terms to the same side alright?


-4q = -2q-24

we've got -2q right see that -2q we've got to do the opposite we add it to both sides.

-4q+2q = -2q+2q-24

-2q = -24

Answer 42

Ooh Okay so 2q cancelled out -2q and 2q made -4q into -2q

Answer 43

Yep

Answer 44

how did you get 80/100?

Answer 45

Makes a lot more sense now :D and I was saying 80/100 is my level of understanding but I get it now xD

Answer 46

ok :) good so now

-2q = -24 so what's q?

Answer 47

q = -24?

Answer 48

\[-24 = -2*q \]

\[\frac{ -24 }{ -2 } = q \]

Answer 49

q = 12

Answer 50

okay so let's do another to solidify this

Answer 51

Okay :D

Answer 52

4y-12 = -4 this is from your problems

Answer 53

So 4y - 12 = -4

Answer 54

yes that's from your problem set you posted so tell us what do do now and show your work

Answer 55

4y - 12 = -4
4y - 12 = 8y
to change 8y into -4 you have to subtract
So y = -13?

Answer 56

alright so first thing you do is you see - 12 right?

Answer 57

Yes

Answer 58

so immediately you should think I need to add +12 to both sides which is the opposite.

Answer 59

so you end up with 4y = -4+12

Answer 60

Okay -4 + 12 = 8

Answer 61

4y = 8

Answer 62

Ohh so you have to get 4 away from y to get the answer next right?

Answer 63

so you add -4+12 and you get 8

and then you divide both sides by 4 and you get y = 2

Answer 64

Try this one using the strategies we talked about

make sure you remember to write in the variables.

7x+6 = -22

Answer 65

Okay 7x + 6 = -22
7x + 6 = 13 so thats 13x
13x = -22

Answer 66

then you have to get 13 out of the equation to get your answer

Answer 67

wait you cant add 7x+6 because they aren't like terms

Answer 68

Oh..

Answer 69

yep they both have to have x in them.

you could add them if it were this 7x+6x

but you cant add 7x+6 together

Answer 70

@Shrek_Wazowski

try again

7x+6 = -22

Answer 71

so you have to get x away from seven so you can combine 7 and 6?

Answer 72

you have to get 6 away from 7 :)

Answer 73

Okay :p

Answer 74

Yes

Answer 75

so you would subtract 6 on both sides and

you would be left with

7x = -22-6

Answer 76

7x = -28

so now what would we do

Answer 77

Sorry I lost connection..

Answer 78

np

so 7x = -28

so now what would we do

Answer 79

You would have to get x

Answer 80

\[\frac{ 7x }{ 7 } = \frac{ -28 }{ 7 } = ? \]

Answer 81

I have to go but i'll be on tomorrow if you still need help tag me.