7.5+(1/2)x=30 - solution

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Solution for 7.5+(1/2)x=30 equation:

x in (-oo:+oo)

(1/2)*x+7.5 = 30 // - 30

(1/2)*x-30+7.5 = 0

1/2*x-22.5 = 0 // + 22.5

1/2*x = 22.5 // : 1/2

x = 22.5/1/2

x = 45

x = 45

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