3b+9+5b=89 - solution

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Solution for 3b+9+5b=89 equation:

b in (-oo:+oo)

3*b+5*b+9 = 89 // - 89

3*b+5*b-89+9 = 0

8*b-80 = 0 // + 80

8*b = 80 // : 8

b = 80/8

b = 10

b = 10

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