7b-9+7b=75 - solution

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Solution for 7b-9+7b=75 equation:

b in (-oo:+oo)

7*b+7*b-9 = 75 // - 75

7*b+7*b-75-9 = 0

14*b-84 = 0 // + 84

14*b = 84 // : 14

b = 84/14

b = 6

b = 6

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