12+b/2=7 - solution

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Solution for 12+b/2=7 equation:

b in (-oo:+oo)

b/2+12 = 7 // - 7

b/2-7+12 = 0

1/2*b+5 = 0 // - 5

1/2*b = -5 // : 1/2

b = -5/1/2

b = -10

b = -10

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