20+7(5b+20)=15b

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Solution for 20+7(5b+20)=15b equation:


Simplifying
20 + 7(5b + 20) = 15b

Reorder the terms:
20 + 7(20 + 5b) = 15b
20 + (20 * 7 + 5b * 7) = 15b
20 + (140 + 35b) = 15b

Combine like terms: 20 + 140 = 160
160 + 35b = 15b

Solving
160 + 35b = 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.
160 + 35b + -15b = 15b + -15b

Combine like terms: 35b + -15b = 20b
160 + 20b = 15b + -15b

Combine like terms: 15b + -15b = 0
160 + 20b = 0

Add '-160' to each side of the equation.
160 + -160 + 20b = 0 + -160

Combine like terms: 160 + -160 = 0
0 + 20b = 0 + -160
20b = 0 + -160

Combine like terms: 0 + -160 = -160
20b = -160

Divide each side by '20'.
b = -8

Simplifying
b = -8

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