Respuesta :

gavinmartin75

Answer:

x = -8

Step-by-step explanation:

57 = -8x - 7

+7           +7

64 = -8x

64/-8

x = -8

Check:

57 = -8(-8) - 7

57 = 64 - 7

57 = 57

musiclover10045

57 = -8x - 7

Add 7 to both sides:

64 = -8x

Divide both sides by -8:

X = 64/-8

X = -8

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