-85=-11(-13+9b)-2(1+7b)

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Solution for -85=-11(-13+9b)-2(1+7b) equation: 


Simplifying
-85 = -11(-13 + 9b) + -2(1 + 7b)
-85 = (-13 * -11 + 9b * -11) + -2(1 + 7b)
-85 = (143 + -99b) + -2(1 + 7b)
-85 = 143 + -99b + (1 * -2 + 7b * -2)
-85 = 143 + -99b + (-2 + -14b)

Reorder the terms:
-85 = 143 + -2 + -99b + -14b

Combine like terms: 143 + -2 = 141
-85 = 141 + -99b + -14b

Combine like terms: -99b + -14b = -113b
-85 = 141 + -113b

Solving
-85 = 141 + -113b

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '113b' to each side of the equation.
-85 + 113b = 141 + -113b + 113b

Combine like terms: -113b + 113b = 0
-85 + 113b = 141 + 0
-85 + 113b = 141

Add '85' to each side of the equation.
-85 + 85 + 113b = 141 + 85

Combine like terms: -85 + 85 = 0
0 + 113b = 141 + 85
113b = 141 + 85

Combine like terms: 141 + 85 = 226
113b = 226

Divide each side by '113'.
b = 2

Simplifying
b = 2

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