15=-9+5(f+3)

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Solution for 15=-9+5(f+3) equation:


Simplifying
15 = -9 + 5(f + 3)

Reorder the terms:
15 = -9 + 5(3 + f)
15 = -9 + (3 * 5 + f * 5)
15 = -9 + (15 + 5f)

Combine like terms: -9 + 15 = 6
15 = 6 + 5f

Solving
15 = 6 + 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.
15 + -5f = 6 + 5f + -5f

Combine like terms: 5f + -5f = 0
15 + -5f = 6 + 0
15 + -5f = 6

Add '-15' to each side of the equation.
15 + -15 + -5f = 6 + -15

Combine like terms: 15 + -15 = 0
0 + -5f = 6 + -15
-5f = 6 + -15

Combine like terms: 6 + -15 = -9
-5f = -9

Divide each side by '-5'.
f = 1.8

Simplifying
f = 1.8

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