X/2-13=20 - solution

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Solution for X/2-13=20 equation:

X in (-oo:+oo)

X/2-13 = 20 // - 20

X/2-20-13 = 0

1/2*X-33 = 0 // + 33

1/2*X = 33 // : 1/2

X = 33/1/2

X = 66

X = 66

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