40-4b=(b-7)

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Solution for 40-4b=(b-7) equation:


Simplifying
40 + -4b = (b + -7)

Reorder the terms:
40 + -4b = (-7 + b)

Remove parenthesis around (-7 + b)
40 + -4b = -7 + b

Solving
40 + -4b = -7 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
40 + -4b + -1b = -7 + b + -1b

Combine like terms: -4b + -1b = -5b
40 + -5b = -7 + b + -1b

Combine like terms: b + -1b = 0
40 + -5b = -7 + 0
40 + -5b = -7

Add '-40' to each side of the equation.
40 + -40 + -5b = -7 + -40

Combine like terms: 40 + -40 = 0
0 + -5b = -7 + -40
-5b = -7 + -40

Combine like terms: -7 + -40 = -47
-5b = -47

Divide each side by '-5'.
b = 9.4

Simplifying
b = 9.4

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