5(1-2b)+4(1+8b)=-57

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Solution for 5(1-2b)+4(1+8b)=-57 equation:


Simplifying
5(1 + -2b) + 4(1 + 8b) = -57
(1 * 5 + -2b * 5) + 4(1 + 8b) = -57
(5 + -10b) + 4(1 + 8b) = -57
5 + -10b + (1 * 4 + 8b * 4) = -57
5 + -10b + (4 + 32b) = -57

Reorder the terms:
5 + 4 + -10b + 32b = -57

Combine like terms: 5 + 4 = 9
9 + -10b + 32b = -57

Combine like terms: -10b + 32b = 22b
9 + 22b = -57

Solving
9 + 22b = -57

Solving for variable 'b'.

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

Add '-9' to each side of the equation.
9 + -9 + 22b = -57 + -9

Combine like terms: 9 + -9 = 0
0 + 22b = -57 + -9
22b = -57 + -9

Combine like terms: -57 + -9 = -66
22b = -66

Divide each side by '22'.
b = -3

Simplifying
b = -3

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