Question

3x - 4y = 7
3x + 2y = -5

When the second equation is subtracted from the first, the resulting equation is _____.

-6y = -12
-6y = 12
-2y = -12
2y = 12

Answer 1

3x - 4y - (3x + 2y) = 7 - (-5)

First, distribute the negative sign into the parenthesis. And then add/subtract like terms and see what you're left with. Don't multiply or divide.

Answer 2

thanks:)

Answer 3

It was my pleasure! :)