7+2b+7b=-11

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Solution for 7+2b+7b=-11 equation: 


b in (-oo:+oo)

2*b+7*b+7 = -11 // + 11

2*b+7*b+7+11 = 0

9*b+18 = 0 // - 18

9*b = -18 // : 9

b = -18/9

b = -2

b = -2

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