3 years ago

Solve by elimination 5x-14y=22 -6x+7y=3

1 answer:

3 0

5x - 14y = 22 ⇒ 5x - 14y = 22
-6x + 7y = 3 ⇒ 12x - 14y = -6
 -7x = 28
 -7 -7
 x = -4
 5x - 14y = 22
 5(-4) - 14y = 22
 -20 - 14y = 22
 + 20 + 20
 -14y = 42
 -14 -14
 y = -3
 (x, y) = (-4, -3)

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