6b+9=-3b+45 - solution

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Solution for 6b+9=-3b+45 equation:

b in (-oo:+oo)

6*b+9 = 45-3*b // - 45-3*b

6*b-(-3*b)-45+9 = 0

6*b+3*b-45+9 = 0

9*b-36 = 0 // + 36

9*b = 36 // : 9

b = 36/9

b = 4

b = 4

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