1/2x-12=21

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Solution for 1/2x-12=21 equation: 


x in (-oo:+oo)

(1/2)*x-12 = 21 // - 21

(1/2)*x-21-12 = 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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