15=5-4f+8

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Solution for 15=5-4f+8 equation:


Simplifying
15 = 5 + -4f + 8

Reorder the terms:
15 = 5 + 8 + -4f

Combine like terms: 5 + 8 = 13
15 = 13 + -4f

Solving
15 = 13 + -4f

Solving for variable 'f'.

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

Add '4f' to each side of the equation.
15 + 4f = 13 + -4f + 4f

Combine like terms: -4f + 4f = 0
15 + 4f = 13 + 0
15 + 4f = 13

Add '-15' to each side of the equation.
15 + -15 + 4f = 13 + -15

Combine like terms: 15 + -15 = 0
0 + 4f = 13 + -15
4f = 13 + -15

Combine like terms: 13 + -15 = -2
4f = -2

Divide each side by '4'.
f = -0.5

Simplifying
f = -0.5

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