Question

-x + 12y = -27 and -5x + 3y = -21

Answer 1

x = 3

y = -2

Explanation:

-x + 12y = -27

-5x + 3y = -21

Time the first equation by -5

5x - 60y = 135

-5x + 3y = -21

-57y = 114

y = -2

Now put in -2 for y and solve for x

-5x + 3(-2) = -21

-5x -6 = -21

-5x = -15

x = 3

Let's check

-5(3) + 3(-2) = -21

-15 - 6 = -21

-21 = -21

So, x = 3 and y = -2 is the correct answer.