Question

3a-3b=-15
-3a-3b=-3
solve using elimination method

Answer 1

I am thinking like terms
so 3 and -3 cancel eachother?

Answer 2

yes :)

Answer 3

add the two equation to eliminate a

Answer 4

3a-3b+(-3a-3b)=-15-3
-3b-3b=-18
-6b=-18
b=3

Answer 5

3a-3b=-15
3a-3(3)=-15
3a=-15+9
3a=-6
a=-2

Answer 6

Thanks, I did it a little different but somehow I got the right answers

Answer 7

Thanks, I did it a little different but somehow I got the right answers

Answer 8

Thanks, I did it a little different but somehow I got the right answers