X/2-1=-7 - solution

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Solution for X/2-1=-7 equation:

X in (-oo:+oo)

X/2-1 = -7 // + 7

X/2-1+7 = 0

1/2*X+6 = 0 // - 6

1/2*X = -6 // : 1/2

X = -6/1/2

X = -12

X = -12

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