Question

Addition Method, I just want to make sure I am doing this right before I move on: a+b=3 & 3a+b=13

Answer 1

-3(a+b=3)
1(3a+b=13)

-3a-3b=-9
3a+b=13

end up with

-3b = -9
b =13

-2b = 4

divide

b = -2

then plug in -2 to one of orig. problems

3a-2+2=13+2

3a=15

divide

a=5

The order would be? ( 5,-2)

Answer 2

check... it must solve both original equations.

Answer 3

>>The order would be? ( 5,-2)

That is correct. @Jlynn89