Question

solve each system by elimination
Please help and solve y

36+7x-8y=0
-6x+6y=18

Answer 1

We have the following two equations:
\[7x-8y+36=0\]\[-6x+6y=18\]We want to solve for y. Therefore, we multiply the first equation by 6 and the second equation by 7:
\[42x-48y+216=0\]\[-42x+42y=126\]If we add these two equations, the x's cancel out and we're left with:
\[-6y=342\]\[y=-57\]

Answer 2

Adding the two equations should give -6y=-90, giving y=15

Answer 3

... and make sure you move the constant to the other side ;p

Answer 4

wait whats x

Answer 5

just plug y=15 into one of the equations and solve for x