x/2-1=-11 - solution

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Solution for x/2-1=-11 equation:

x in (-oo:+oo)

x/2-1 = -11 // + 11

x/2-1+11 = 0

1/2*x+10 = 0 // - 10

1/2*x = -10 // : 1/2

x = -10/1/2

x = -20

x = -20

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