3b+9=31+b

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Solution for 3b+9=31+b equation: 


b in (-oo:+oo)

3*b+9 = b+31 // - b+31

3*b-b-31+9 = 0

2*b-22 = 0 // + 22

2*b = 22 // : 2

b = 22/2

b = 11

b = 11

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