Respuesta :

SOLUTION:

Case: Linear equations

Method:

-3x + 9y = -57

But x = 4

-3x + 9y = -57

-3(4) + 9y = -57

-12 + 9y = -57

9y = -57 + 12

9y = -45

Divide both sides by 9

y = -45/9

y = -5

Final answer:

y = -5

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