-2(5b+7)-(1-b)=-15

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Solution for -2(5b+7)-(1-b)=-15 equation: 


Simplifying
-2(5b + 7) + -1(1 + -1b) = -15

Reorder the terms:
-2(7 + 5b) + -1(1 + -1b) = -15
(7 * -2 + 5b * -2) + -1(1 + -1b) = -15
(-14 + -10b) + -1(1 + -1b) = -15
-14 + -10b + (1 * -1 + -1b * -1) = -15
-14 + -10b + (-1 + 1b) = -15

Reorder the terms:
-14 + -1 + -10b + 1b = -15

Combine like terms: -14 + -1 = -15
-15 + -10b + 1b = -15

Combine like terms: -10b + 1b = -9b
-15 + -9b = -15

Add '15' to each side of the equation.
-15 + 15 + -9b = -15 + 15

Combine like terms: -15 + 15 = 0
0 + -9b = -15 + 15
-9b = -15 + 15

Combine like terms: -15 + 15 = 0
-9b = 0

Solving
-9b = 0

Solving for variable 'b'.

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

Divide each side by '-9'.
b = 0

Simplifying
b = 0

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