-7(1-4b)=-39-4b

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Solution for -7(1-4b)=-39-4b equation:


Simplifying
-7(1 + -4b) = -39 + -4b
(1 * -7 + -4b * -7) = -39 + -4b
(-7 + 28b) = -39 + -4b

Solving
-7 + 28b = -39 + -4b

Solving for variable 'b'.

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

Add '4b' to each side of the equation.
-7 + 28b + 4b = -39 + -4b + 4b

Combine like terms: 28b + 4b = 32b
-7 + 32b = -39 + -4b + 4b

Combine like terms: -4b + 4b = 0
-7 + 32b = -39 + 0
-7 + 32b = -39

Add '7' to each side of the equation.
-7 + 7 + 32b = -39 + 7

Combine like terms: -7 + 7 = 0
0 + 32b = -39 + 7
32b = -39 + 7

Combine like terms: -39 + 7 = -32
32b = -32

Divide each side by '32'.
b = -1

Simplifying
b = -1

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