3(f+3)+9=13+5f

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Solution for 3(f+3)+9=13+5f equation:


Simplifying
3(f + 3) + 9 = 13 + 5f

Reorder the terms:
3(3 + f) + 9 = 13 + 5f
(3 * 3 + f * 3) + 9 = 13 + 5f
(9 + 3f) + 9 = 13 + 5f

Reorder the terms:
9 + 9 + 3f = 13 + 5f

Combine like terms: 9 + 9 = 18
18 + 3f = 13 + 5f

Solving
18 + 3f = 13 + 5f

Solving for variable 'f'.

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

Add '-5f' to each side of the equation.
18 + 3f + -5f = 13 + 5f + -5f

Combine like terms: 3f + -5f = -2f
18 + -2f = 13 + 5f + -5f

Combine like terms: 5f + -5f = 0
18 + -2f = 13 + 0
18 + -2f = 13

Add '-18' to each side of the equation.
18 + -18 + -2f = 13 + -18

Combine like terms: 18 + -18 = 0
0 + -2f = 13 + -18
-2f = 13 + -18

Combine like terms: 13 + -18 = -5
-2f = -5

Divide each side by '-2'.
f = 2.5

Simplifying
f = 2.5

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