Question

Solve Using Substitution
-9x + 6y = 18
y = -6​

Answer 1

the answer should be x = -6

Explanation:

-9x + 6y = 18

-9x + 6(-6) = 18

-9x - 36 = 18

-9x - 36 + 36 = 18 + 36

-9x = 54

-9x ÷ -9 = 54 ÷ -9

x = -6