45=5(b-80)

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Solution for 45=5(b-80) equation:


Simplifying
45 = 5(b + -80)

Reorder the terms:
45 = 5(-80 + b)
45 = (-80 * 5 + b * 5)
45 = (-400 + 5b)

Solving
45 = -400 + 5b

Solving for variable 'b'.

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

Add '-5b' to each side of the equation.
45 + -5b = -400 + 5b + -5b

Combine like terms: 5b + -5b = 0
45 + -5b = -400 + 0
45 + -5b = -400

Add '-45' to each side of the equation.
45 + -45 + -5b = -400 + -45

Combine like terms: 45 + -45 = 0
0 + -5b = -400 + -45
-5b = -400 + -45

Combine like terms: -400 + -45 = -445
-5b = -445

Divide each side by '-5'.
b = 89

Simplifying
b = 89

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