5-13=3f-9-7f

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Solution for 5-13=3f-9-7f equation:


Simplifying
5 + -13 = 3f + -9 + -7f

Combine like terms: 5 + -13 = -8
-8 = 3f + -9 + -7f

Reorder the terms:
-8 = -9 + 3f + -7f

Combine like terms: 3f + -7f = -4f
-8 = -9 + -4f

Solving
-8 = -9 + -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.
-8 + 4f = -9 + -4f + 4f

Combine like terms: -4f + 4f = 0
-8 + 4f = -9 + 0
-8 + 4f = -9

Add '8' to each side of the equation.
-8 + 8 + 4f = -9 + 8

Combine like terms: -8 + 8 = 0
0 + 4f = -9 + 8
4f = -9 + 8

Combine like terms: -9 + 8 = -1
4f = -1

Divide each side by '4'.
f = -0.25

Simplifying
f = -0.25

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