4-b=-7(-b-4)

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


Simplifying
4 + -1b = -7(-1b + -4)

Reorder the terms:
4 + -1b = -7(-4 + -1b)
4 + -1b = (-4 * -7 + -1b * -7)
4 + -1b = (28 + 7b)

Solving
4 + -1b = 28 + 7b

Solving for variable 'b'.

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

Add '-7b' to each side of the equation.
4 + -1b + -7b = 28 + 7b + -7b

Combine like terms: -1b + -7b = -8b
4 + -8b = 28 + 7b + -7b

Combine like terms: 7b + -7b = 0
4 + -8b = 28 + 0
4 + -8b = 28

Add '-4' to each side of the equation.
4 + -4 + -8b = 28 + -4

Combine like terms: 4 + -4 = 0
0 + -8b = 28 + -4
-8b = 28 + -4

Combine like terms: 28 + -4 = 24
-8b = 24

Divide each side by '-8'.
b = -3

Simplifying
b = -3

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