5b+7=47

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Solution for 5b+7=47 equation: 


b in (-oo:+oo)

5*b+7 = 47 // - 47

5*b-47+7 = 0

5*b-40 = 0 // + 40

5*b = 40 // : 5

b = 40/5

b = 8

b = 8

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