3f+4=f+13

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Solution for 3f+4=f+13 equation:


Simplifying
3f + 4 = f + 13

Reorder the terms:
4 + 3f = f + 13

Reorder the terms:
4 + 3f = 13 + f

Solving
4 + 3f = 13 + f

Solving for variable 'f'.

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

Add '-1f' to each side of the equation.
4 + 3f + -1f = 13 + f + -1f

Combine like terms: 3f + -1f = 2f
4 + 2f = 13 + f + -1f

Combine like terms: f + -1f = 0
4 + 2f = 13 + 0
4 + 2f = 13

Add '-4' to each side of the equation.
4 + -4 + 2f = 13 + -4

Combine like terms: 4 + -4 = 0
0 + 2f = 13 + -4
2f = 13 + -4

Combine like terms: 13 + -4 = 9
2f = 9

Divide each side by '2'.
f = 4.5

Simplifying
f = 4.5

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