-b+7=6b-42

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Solution for -b+7=6b-42 equation: 


b in (-oo:+oo)

7-b = 6*b-42 // - 6*b-42

7-b-(6*b)+42 = 0

7-b-6*b+42 = 0

49-7*b = 0 // - 49

-7*b = -49 // : -7

b = -49/(-7)

b = 7

b = 7

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