Question

Huge medal,Fan,and mention for the first one to help me.only review

1) 4z-z=4

2)6-3n+3n= 6-6n

3)2g-3+11-8g=? <---- this one I had trouble with

Answer 1

@Hayhayz @jabez177 @MrCoolGuy

Answer 2

what am i looking at here?

Answer 3

1

Answer 4

are we trying to solve for the specific variable or is the goal to add together like terms?

Answer 5

adding together like terms

Answer 6

1. 4z-z

if i have 4 apples, and i subtract 1 apple, how many apples do i have?

Answer 7

3

Answer 8

so its 3z

Answer 9

now if an apple was the variable z

then the solution of 1. would be 3z

Answer 10

right

Answer 11

thanks what about umber two and three

Answer 12

well, apply the apple analogy to question 2

Answer 13

or, lets put it this way
6-3n+3n

i have 6 dollars, and i take away 3 hundred dollar bills, but at the same time my friend gives me 3 hundred dollar bills,

how much money do i have?

Answer 14

then it would be 6-3n still right

Answer 15

ok, i wrote that wrong

you have 6 dollars,
friend gives you 3 20 dollar bills,
i take away 3 20 dollar bills,

how much money are you left with?

Answer 16

then its 6 then?

Answer 17

yes, because you start with a constant 6

you subtract 3n away while at the same time you add 3n

3n-3n = 0

thus you are left with 6

Answer 18

does that make sense?

Answer 19

yes it does thank you what about the last one? then i will give yo a medal and fan

Answer 20

ok, let me give you a statement, tell me if im right or wrong

Answer 21

i have 2 benjamins and 1 washington, so i have 3 dollars

Answer 22

no yo have $301

Answer 23

but i only 3 bills

Answer 24

and its $201 dollars,

anyways, this is the concept of a variable

Answer 25

mkay?

Answer 26

a benjamin, or a 100 dollar bill, on only a single piece of paper, but it has a value of $100

Answer 27

is only

Answer 28

yes

Answer 29

so, if i had 3 20s and 4 100s, i cant say i have 7 dollars
but also cant say i have 7 20s or 7 100s

Answer 30

so that example is like saying
3x+4y
where x could be $20 and y could be $100

Answer 31

now lets look at your final problem
2g-3

Answer 32

we have 2g and we subtract 3

but we dont know the value of 2g
so we cant combine the terms together

since we cant combine the terms together, we just leave it as is

Answer 33

and this is essentially the theory of adding and subtracting like terms together

Answer 34

any questions?

Answer 35

oh crap, i misread problem 3

Answer 36

sorryyyyy

Answer 37

no i messed it up i just changed it

Answer 38

sorry

Answer 39

anyways, do you think you can do problem 3 on your own

Answer 40

after what we just discussed?

Answer 41

ill try

Answer 42

also, you can try to think of a negative number like you owing someone (I.O.U)

Answer 43

8+6n right

Answer 44

oooh wait i messed it up hold on a moment

Answer 45

good that you caught that, i hope

Answer 46

the 8 was correct though

Answer 47

so its 8-(-6n) right

Answer 48

not exactly
-(-6n) is the equivalent of +6n
which is what you originally had

Answer 49

and that was wrong

Answer 50

so its right then

Answer 51

no no,
2n-8n = -6n
it should be
8+(-6n) which is the equivalent of
8-6n

Answer 52

oh okay thanks for helping me

Answer 53

2 negatives dont make a right, but in the case of mathematics, 2 negatives do make a positive

Answer 54

also

Answer 55

do you face your opponent in glorious battle?

Answer 56

um yes?

Answer 57

SONTAR HA

Answer 58

AAAAAAAAAAAAAAAAAAAAAAAH XD

Answer 59

bye