3 years ago

-3x + y = 22 -12x – 10y=-10

Mathematics

1 answer:

dimaraw [331]3 years ago

8 0

Answer:

Step-by-step 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

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