anonymous
  • anonymous
PLEASE HELP! WILL MEDAL! Image below
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
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anonymous
  • anonymous
@pooja195 :)
pooja195
  • pooja195
@sammixboo

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anonymous
  • anonymous
@Nnesha
Nnesha
  • Nnesha
why do you think it's C ??
anonymous
  • anonymous
Accidentally clicked on it, didn't mean to
Nnesha
  • Nnesha
i mean B which is step 3
Nnesha
  • Nnesha
so that was a guess ?
anonymous
  • anonymous
Yeah I guess, I didn't really mean to click on it
anonymous
  • anonymous
Is it right? lol
Nnesha
  • Nnesha
i need explanation why did you pick ? and bec u that was an educated guess let's start it ovr
anonymous
  • anonymous
Yeah I didnt evem mean to click on it, lets pretend i didnt click on that answer haha
Nnesha
  • 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
  • Nnesha
so that's how multiply first equation by -2
Nnesha
  • Nnesha
|dw:1434568328568:dw| multiply both sides by -2 let me know what you get :=)
anonymous
  • anonymous
4m =4 n+b?
anonymous
  • anonymous
-2 times -2 is -4
Nnesha
  • Nnesha
b how did you get b ?? -2(n+6) multiply everything which is inside the parentheses by outside term
Nnesha
  • Nnesha
for example a(b+c) = a times b +a times c :=)
anonymous
  • anonymous
Gah, I dont know! :(
Nnesha
  • Nnesha
-2 times n = ? -2 times 6 = ?
anonymous
  • anonymous
-2 times 6 = -12
anonymous
  • anonymous
-2 times n = -2?
Nnesha
  • Nnesha
n can be written as 1n so multiply the coefficients -2 times 1n = -2n
Nnesha
  • Nnesha
now step is right or na ?
Nnesha
  • Nnesha
now step 2 is right or na ?
anonymous
  • anonymous
right
anonymous
  • anonymous
i mean wrong
anonymous
  • anonymous
Let me look at it for a sec lol
Nnesha
  • Nnesha
okay
anonymous
  • anonymous
Step 2 is wrong
Nnesha
  • Nnesha
how is it wrong ?
anonymous
  • anonymous
step 2 is right
Nnesha
  • Nnesha
yes |dw:1434568814335:dw| now combine like terms
anonymous
  • anonymous
Gah, algebra is NOT my best class
Nnesha
  • Nnesha
|dw:1434569003073:dw| COmbine like terms
Nnesha
  • Nnesha
just practice :=)
anonymous
  • anonymous
2m = 10n 2m = 16n
anonymous
  • anonymous
and so m equals 5 in the first equation and m equals 8 in the second?
Nnesha
  • Nnesha
|dw:1434569117690:dw| combine them -2m and 2m are like terms so -2m +2m = ?
anonymous
  • anonymous
0
anonymous
  • anonymous
they cancel eachother
Nnesha
  • Nnesha
yes right !
anonymous
  • anonymous
:D
Nnesha
  • Nnesha
|dw:1434569214780:dw| now combine these one
Nnesha
  • Nnesha
and why is it wrong ?
anonymous
  • anonymous
14n 16n
anonymous
  • anonymous
Never mind about the step 3 is wrong lol
Nnesha
  • Nnesha
it's okay tell me why do you think it's wrong ?
anonymous
  • anonymous
Step 4 is wrong, because it should be 10n and 16n!
anonymous
  • anonymous
they wrote −20 = 10n
Nnesha
  • 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
  • Nnesha
we are still on step 3 :=)
Nnesha
  • Nnesha
|dw:1434569457564:dw|
anonymous
  • anonymous
Got no idea, maybe 4?
anonymous
  • anonymous