Question

Can someone PLEASE give me a 7th grade algebra equation, and show me how to solve it?

Answer 1

7x + 10 = 59

Answer 2

2x + 1 = 3 undo +1 by -1 from both sides to get balanced
2x=2 divide both sides by 2
x=1

Answer 3

So, you would have to go through the order of operations, and start with the... ugh

Answer 4

i'm so stupid >:(

Answer 5

inverse operation + and -, x and /

Answer 6

we can start simpler:

how about:

x+3 = 5

Answer 7

that would be 2

Answer 8

you are correct, but why is it 2?

Answer 9

because 3- 5=2

Answer 10

always undo addition or subtraction first then multiplication or division...you got it!

Answer 11

:D so, can you give me a harder one?

Answer 12

almost correct :) 5 - 3 = 2

Answer 13

5-3 = 2

Answer 14

wait what did i say?

Answer 15

3 - 5 = -2

Answer 16

oops thats what i meant... that would be a negative right?

Answer 17

yes!

Answer 18

sweet

Answer 19

very good!

Answer 20

but lets step thru this easy one so you can know what is going on underneath it all.

It does no good to simply go ..thats an easy one! and give the answer right?

Answer 21

true

Answer 22

P.E.M.D.A.S.

Answer 23

x + 3 = 5 that equal sign means that we want to keep things in balance, have you ever played on a seesaw?

Answer 24

yes

Answer 25

what happens when the kids on each end weigh the same?

Answer 26

one will have to push off to make them move, or else it will be balanced. and that would still be 2

Answer 27

correct :) now, we want to keep our equation balanced at ALL TIMES!! otherwise it becomes a lie...and lies are bad :)

Answer 28

yes... haha

Answer 29

if we want to solve for "x" we need to get it all by itself so we can ask it some personal stuff.... we need to get rid of all that stuff that is attached to it right?

Answer 30

yeah... so you would have to follow order of operations?

Answer 31

order of operations is good to know, and we will get to that sometime.. but lets take this step by step so we understand the basics that every other problem you come across will face ok?

Answer 32

ok. i'm sorry i suck at math :/

Answer 33

those are the basics just remember to use the order of operations backwards ; )

Answer 34

so lets look at the (x+3). its got extra stuff; it has a (+3) sticking to it right? If we could get this to be more like (x+0) that would be great right?

Answer 35

yes i think?

Answer 36

does x+0 = x?

Answer 37

yes

Answer 38

then we want x+0 :)

how do we get rid of (+3) and turn it into "0"??

Answer 39

ummmmm.... put it in parenthises?

Answer 40

NO

Answer 41

i wish lol

Answer 42

WE WOULD SUBTRACT

Answer 43

thats correct, we would take away 3. So lets do that here:

x+3-3 = 5-3 because if we take away from one side we gotta take away from the other right?

Answer 44

yeah. so x would equal 2?

Answer 45

it will....but lets see why.

we get x+0 = 2 from this. And we all no that zero is pretty useless...not!!

x+0 = x, and thats important to know :) so

x = 2

Answer 46

ahhh i understand.

Answer 47

wait where did you get the 5?

Answer 48

oh no nevermind.

Answer 49

I dug around in the recesses of my brain and pulled it out to create a 7th grade algebra question for you lol

Answer 50

:D

Answer 51

tell me what I do with this one now:

t - 4 = 3

Answer 52

turn the 4 into 0? i think i know the answer to this though

Answer 53

1?

Answer 54

lets turn the 4 into how? we have t - 4 .... what doe we do to turn it into t+0 ??

Answer 55

O.O

Answer 56

4 into 0 how...

Answer 57

oh subtract

Answer 58

lets try that and see if it works ok?

t - 4 - 4 = 3

t - 8 = 3 .... that didnt do us much good did it?

lets go back to:

t - 4 = 3

Answer 59

ok. so would we change it to 4-3=t?

Answer 60

stay with me now :)

do you see that t is attached to a (-4)? t-4

Answer 61

¿:ı

Answer 62

yes

Answer 63

a negative 4?

Answer 64

good, yes :)

Answer 65

how do we get rid of a -4?

Answer 66

add 4

Answer 67

exactly :)

Answer 68

lets try it out:

t -4+4 = 3+4

t-0 = 7

t = 7

Answer 69

i think i understand that.. but why wouldn't the 3 be a negative if its... wait i'm confusing myself....

Answer 70

we add 4 to EACH side right?

t -4+4 = 3+4 what does 3+4 =?

Answer 71

7....

Answer 72

OH

Answer 73

i understand

Answer 74

good :)

Answer 75

wanna try another one?

Answer 76

thanks you for doing this for me.
and yes please

Answer 77

2x+8=16

Answer 78

you have to do the oppsite

\

Answer 79

¿:ı

Answer 80

youre welcome:

lets try something related, but different now.

we will get to that one soon enough

Answer 81

ok

Answer 82

5x = 15

Answer 83

sounds good

Answer 84

-8 both sides

Answer 85

2x+8=16

Answer 86

ummm 5x would be like, 5• 5?

Answer 87

it would be the same concept as 5*5 right.

Answer 88

so... would you be solving for x in that equation?

Answer 89

2x+8=16
-8 -8
2x=8
2x/2=8/2
x=4

Answer 90

yes.

if we add to get rid of a subtraction. And we Subtract to get rid of an addition;

what do youthink we might do to get rid og a multiplier?

Answer 91

oh xcrap.. divide?

Answer 92

i hpoe this helps

Answer 93

divide is correct:)

Answer 94

2x+8=16
-8 -8
2x=8
2x/2=8/2
x=4

Answer 95

that one

Answer 96

i suck at dividing :D thanks for being patiant

Answer 97

do you get my eample

Answer 98

we dont have to know alot about division for this really; we only have to know that any number divided by itself equals 1