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skad [1K]
2 years ago
10

-11x - 72 = 84 + x And I also need to do the check part

Mathematics
1 answer:
Montano1993 [528]2 years ago
6 0

Answer:

Step-by-step explanation:

-11x - 72 = 84 + x

combine like terms on opposite side of =

(-11x )+ (-1x) = (84) + (72)

-12x = 156

divide both sides by -12 to isolate x

-12/-12 = 156/-12

x = -13

insert (-13)  for x

(-11 * -13) -72 = 84 + (-13)

71                =          71

equality means its right

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