PLEASE HELP! WILL MEDAL!
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- anonymous

PLEASE HELP! WILL MEDAL!
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- anonymous

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- anonymous

@pooja195 :)

- pooja195

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## More answers

- anonymous

@Nnesha

- Nnesha

why do you think it's C ??

- anonymous

Accidentally clicked on it, didn't mean to

- Nnesha

i mean B which is step 3

- Nnesha

so that was a guess ?

- anonymous

Yeah I guess, I didn't really mean to click on it

- anonymous

Is it right? lol

- Nnesha

i need explanation why did you pick ? and bec u that was an educated guess
let's start it ovr

- anonymous

Yeah I didnt evem mean to click on it, lets pretend i didnt click on that answer haha

- Nnesha

elimination process
to isolate one variable you need to cross out 2nd variable to do that you need opposite sign with same number :=)

- Nnesha

so that's how multiply first equation by -2

- Nnesha

|dw:1434568328568:dw|
multiply both sides by -2 let me know what you get :=)

- anonymous

4m =4 n+b?

- anonymous

-2 times -2 is -4

- Nnesha

b how did you get b ??
-2(n+6) multiply everything which is inside the parentheses by outside term

- Nnesha

for example a(b+c) = a times b +a times c :=)

- anonymous

Gah, I dont know! :(

- Nnesha

-2 times n = ?
-2 times 6 = ?

- anonymous

-2 times 6 = -12

- anonymous

-2 times n = -2?

- Nnesha

n can be written as 1n so multiply the coefficients -2 times 1n = -2n

- Nnesha

now step is right or na ?

- Nnesha

now step 2 is right or na ?

- anonymous

right

- anonymous

i mean wrong

- anonymous

Let me look at it for a sec lol

- Nnesha

okay

- anonymous

Step 2 is wrong

- Nnesha

how is it wrong ?

- anonymous

step 2 is right

- Nnesha

yes |dw:1434568814335:dw|
now combine like terms

- anonymous

Gah, algebra is NOT my best class

- Nnesha

|dw:1434569003073:dw|
COmbine like terms

- Nnesha

just practice :=)

- anonymous

2m = 10n
2m = 16n

- anonymous

and so m equals 5 in the first equation and m equals 8 in the second?

- Nnesha

|dw:1434569117690:dw|
combine them
-2m and 2m are like terms
so -2m +2m = ?

- anonymous

0

- anonymous

they cancel eachother

- Nnesha

yes right !

- anonymous

:D

- Nnesha

|dw:1434569214780:dw|
now combine these one

- Nnesha

and why is it wrong ?

- anonymous

14n
16n

- anonymous

Never mind about the step 3 is wrong lol

- Nnesha

it's okay tell me why do you think it's wrong ?

- anonymous

Step 4 is wrong, because it should be 10n and 16n!

- anonymous

they wrote âˆ’20 = 10n

- Nnesha

combine like terms meaning add coefficient of same variable
examples
2+6 are like terms both numbers are constant(without any variable )
2x+3x are like terms bec variables are same

- Nnesha

we are still on step 3 :=)

- Nnesha

|dw:1434569457564:dw|