1/2x+21/2=15 - solution

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Solution for 1/2x+21/2=15 equation:

x in (-oo:+oo)

(1/2)*x+21/2 = 15 // - 15

(1/2)*x+21/2-15 = 0

1/2*x-9/2 = 0 // + 9/2

1/2*x = 9/2 // : 1/2

x = 9/2/1/2

x = 9

x = 9

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