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

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

b in (-oo:+oo)

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

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

9*b+9 = 0 // - 9

9*b = -9 // : 9

b = -9/9

b = -1

b = -1

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