90=-5(-8-5b)

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Solution for 90=-5(-8-5b) equation:


Simplifying
90 = -5(-8 + -5b)
90 = (-8 * -5 + -5b * -5)
90 = (40 + 25b)

Solving
90 = 40 + 25b

Solving for variable 'b'.

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

Add '-25b' to each side of the equation.
90 + -25b = 40 + 25b + -25b

Combine like terms: 25b + -25b = 0
90 + -25b = 40 + 0
90 + -25b = 40

Add '-90' to each side of the equation.
90 + -90 + -25b = 40 + -90

Combine like terms: 90 + -90 = 0
0 + -25b = 40 + -90
-25b = 40 + -90

Combine like terms: 40 + -90 = -50
-25b = -50

Divide each side by '-25'.
b = 2

Simplifying
b = 2

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