21/2+3b=4 - solution

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Solution for 21/2+3b=4 equation:

b in (-oo:+oo)

3*b+21/2 = 4 // - 4

3*b+21/2-4 = 0

3*b+13/2 = 0 // - 13/2

3*b = -13/2 // : 3

b = -13/2/3

b = -13/6

b = -13/6

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