x/2-3=90 - solution

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Solution for x/2-3=90 equation:

x in (-oo:+oo)

x/2-3 = 90 // - 90

x/2-90-3 = 0

1/2*x-93 = 0 // + 93

1/2*x = 93 // : 1/2

x = 93/1/2

x = 186

x = 186

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