8+b+7b=40 - solution

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Solution for 8+b+7b=40 equation:

b in (-oo:+oo)

b+7*b+8 = 40 // - 40

b+7*b-40+8 = 0

8*b-32 = 0 // + 32

8*b = 32 // : 8

b = 32/8

b = 4

b = 4

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