-2+7b+b=-90 - solution

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Solution for -2+7b+b=-90 equation:

b in (-oo:+oo)

7*b+b-2 = -90 // + 90

7*b+b-2+90 = 0

8*b+88 = 0 // - 88

8*b = -88 // : 8

b = -88/8

b = -11

b = -11

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