Question

X - 4y = -16
-x + 3y = 10
How do I solve by substitution step by step?

Answer 1

-40, -6

Explanation:

Add -x and x together, add -4y and 3y together, and -16 nd 10 together

When adding -x and x, they will cancel each other out.

• y=-6

Then substitute the y values in one of the equations for -6.

• x-4(-6)=-16

Isolate x to find the value of x

• x+24=-16
• x=-40

Check your answer:

• -40-4(-6)=-16
• -40+24=-16
• -16=-16