-3(f-5)=-21

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Solution for -3(f-5)=-21 equation:


Simplifying
-3(f + -5) = -21

Reorder the terms:
-3(-5 + f) = -21
(-5 * -3 + f * -3) = -21
(15 + -3f) = -21

Solving
15 + -3f = -21

Solving for variable 'f'.

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

Add '-15' to each side of the equation.
15 + -15 + -3f = -21 + -15

Combine like terms: 15 + -15 = 0
0 + -3f = -21 + -15
-3f = -21 + -15

Combine like terms: -21 + -15 = -36
-3f = -36

Divide each side by '-3'.
f = 12

Simplifying
f = 12

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