15=-30/12+b - solution

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Solution for 15=-30/12+b equation:

b in (-oo:+oo)

15 = b-30/12 // - b-30/12

15-b-(-30/12) = 0

5/2-b+15 = 0

35/2-b = 0 // - 35/2

-b = -35/2 // * -1

b = 35/2

b = 35/2

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