20b+7=8b-9+7b

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Solution for 20b+7=8b-9+7b equation:


Simplifying
20b + 7 = 8b + -9 + 7b

Reorder the terms:
7 + 20b = 8b + -9 + 7b

Reorder the terms:
7 + 20b = -9 + 8b + 7b

Combine like terms: 8b + 7b = 15b
7 + 20b = -9 + 15b

Solving
7 + 20b = -9 + 15b

Solving for variable 'b'.

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

Add '-15b' to each side of the equation.
7 + 20b + -15b = -9 + 15b + -15b

Combine like terms: 20b + -15b = 5b
7 + 5b = -9 + 15b + -15b

Combine like terms: 15b + -15b = 0
7 + 5b = -9 + 0
7 + 5b = -9

Add '-7' to each side of the equation.
7 + -7 + 5b = -9 + -7

Combine like terms: 7 + -7 = 0
0 + 5b = -9 + -7
5b = -9 + -7

Combine like terms: -9 + -7 = -16
5b = -16

Divide each side by '5'.
b = -3.2

Simplifying
b = -3.2

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