20=b-4+7b

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Solution for 20=b-4+7b equation:


Simplifying
20 = b + -4 + 7b

Reorder the terms:
20 = -4 + b + 7b

Combine like terms: b + 7b = 8b
20 = -4 + 8b

Solving
20 = -4 + 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.
20 + -8b = -4 + 8b + -8b

Combine like terms: 8b + -8b = 0
20 + -8b = -4 + 0
20 + -8b = -4

Add '-20' to each side of the equation.
20 + -20 + -8b = -4 + -20

Combine like terms: 20 + -20 = 0
0 + -8b = -4 + -20
-8b = -4 + -20

Combine like terms: -4 + -20 = -24
-8b = -24

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

Simplifying
b = 3

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