7b-4=66

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Solution for 7b-4=66 equation: 


b in (-oo:+oo)

7*b-4 = 66 // - 66

7*b-66-4 = 0

7*b-70 = 0 // + 70

7*b = 70 // : 7

b = 70/7

b = 10

b = 10

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