1/2w-3=7 - solution

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Solution for 1/2w-3=7 equation:

w in (-oo:+oo)

(1/2)*w-3 = 7 // - 7

(1/2)*w-7-3 = 0

1/2*w-10 = 0 // + 10

1/2*w = 10 // : 1/2

w = 10/1/2

w = 20

w = 20

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