5(f+20)+20=12(f-5)+f

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Solution for 5(f+20)+20=12(f-5)+f equation:


Simplifying
5(f + 20) + 20 = 12(f + -5) + f

Reorder the terms:
5(20 + f) + 20 = 12(f + -5) + f
(20 * 5 + f * 5) + 20 = 12(f + -5) + f
(100 + 5f) + 20 = 12(f + -5) + f

Reorder the terms:
100 + 20 + 5f = 12(f + -5) + f

Combine like terms: 100 + 20 = 120
120 + 5f = 12(f + -5) + f

Reorder the terms:
120 + 5f = 12(-5 + f) + f
120 + 5f = (-5 * 12 + f * 12) + f
120 + 5f = (-60 + 12f) + f

Combine like terms: 12f + f = 13f
120 + 5f = -60 + 13f

Solving
120 + 5f = -60 + 13f

Solving for variable 'f'.

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

Add '-13f' to each side of the equation.
120 + 5f + -13f = -60 + 13f + -13f

Combine like terms: 5f + -13f = -8f
120 + -8f = -60 + 13f + -13f

Combine like terms: 13f + -13f = 0
120 + -8f = -60 + 0
120 + -8f = -60

Add '-120' to each side of the equation.
120 + -120 + -8f = -60 + -120

Combine like terms: 120 + -120 = 0
0 + -8f = -60 + -120
-8f = -60 + -120

Combine like terms: -60 + -120 = -180
-8f = -180

Divide each side by '-8'.
f = 22.5

Simplifying
f = 22.5

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