-b+4b=8b-20

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Solution for -b+4b=8b-20 equation:


Simplifying
-1b + 4b = 8b + -20

Combine like terms: -1b + 4b = 3b
3b = 8b + -20

Reorder the terms:
3b = -20 + 8b

Solving
3b = -20 + 8b

Solving for variable 'b'.

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

Add '-8b' to each side of the equation.
3b + -8b = -20 + 8b + -8b

Combine like terms: 3b + -8b = -5b
-5b = -20 + 8b + -8b

Combine like terms: 8b + -8b = 0
-5b = -20 + 0
-5b = -20

Divide each side by '-5'.
b = 4

Simplifying
b = 4

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