3f+9f-3=7-f

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Solution for 3f+9f-3=7-f equation:


Simplifying
3f + 9f + -3 = 7 + -1f

Reorder the terms:
-3 + 3f + 9f = 7 + -1f

Combine like terms: 3f + 9f = 12f
-3 + 12f = 7 + -1f

Solving
-3 + 12f = 7 + -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.
-3 + 12f + f = 7 + -1f + f

Combine like terms: 12f + f = 13f
-3 + 13f = 7 + -1f + f

Combine like terms: -1f + f = 0
-3 + 13f = 7 + 0
-3 + 13f = 7

Add '3' to each side of the equation.
-3 + 3 + 13f = 7 + 3

Combine like terms: -3 + 3 = 0
0 + 13f = 7 + 3
13f = 7 + 3

Combine like terms: 7 + 3 = 10
13f = 10

Divide each side by '13'.
f = 0.7692307692

Simplifying
f = 0.7692307692

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