f+f+f+f-5=15-f

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Solution for f+f+f+f-5=15-f equation: 


Simplifying
f + f + f + f + -5 = 15 + -1f

Reorder the terms:
-5 + f + f + f + f = 15 + -1f

Combine like terms: f + f = 2f
-5 + 2f + f + f = 15 + -1f

Combine like terms: 2f + f = 3f
-5 + 3f + f = 15 + -1f

Combine like terms: 3f + f = 4f
-5 + 4f = 15 + -1f

Solving
-5 + 4f = 15 + -1f

Solving for variable 'f'.

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

Add 'f' to each side of the equation.
-5 + 4f + f = 15 + -1f + f

Combine like terms: 4f + f = 5f
-5 + 5f = 15 + -1f + f

Combine like terms: -1f + f = 0
-5 + 5f = 15 + 0
-5 + 5f = 15

Add '5' to each side of the equation.
-5 + 5 + 5f = 15 + 5

Combine like terms: -5 + 5 = 0
0 + 5f = 15 + 5
5f = 15 + 5

Combine like terms: 15 + 5 = 20
5f = 20

Divide each side by '5'.
f = 4

Simplifying
f = 4

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