x/6+12=21 - solution

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Solution for x/6+12=21 equation:

x in (-oo:+oo)

x/6+12 = 21 // - 21

x/6-21+12 = 0

1/6*x-9 = 0 // + 9

1/6*x = 9 // : 1/6

x = 9/1/6

x = 54

x = 54

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