Question

-3x + y = 22
-12x – 10y=-10

Answer 1

x = -5, y = 7

Explanation:

-3x + y = 22 ⇒ y = 3x + 22

-12x - 10y = -10 and y = 3x + 22

-12x - 10(3x + 22) = -10

-12x - 30x - 220 = -10

+220 +220

- 42x = 210

÷(-42) ÷(-42)

x = -5

y = 3(-5) + 22 = -15 + 22 = 7