4x - 9y = - 42

x+5y=4

Solve by elimination

This is what I got as the answer

x = - 6 and y = 2

Step-by-step explanation:

4x-9y = - 42

x+5y = 4

4x-9y = - 42

4x + 20y = 16

Take them away from each other.

-29y = - 58

Find what one y is by dividing.

-58 / - 29 = 2

y = 2

Substitute back into original.

x + 10 (5*y) = 4

Take 10 away to find x.

x = - 6

Check if answer is correct.

4x - 9y = - 42

-24 - 18 = - 42

Final Answer: x = - 6 and y = 2