-3b-7+7b=-15

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Solution for -3b-7+7b=-15 equation: 


b in (-oo:+oo)

7*b-3*b-7 = -15 // + 15

7*b-3*b-7+15 = 0

4*b+8 = 0 // - 8

4*b = -8 // : 4

b = -8/4

b = -2

b = -2

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