-3(f-2)=21

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Solution for -3(f-2)=21 equation: 


Simplifying
-3(f + -2) = 21

Reorder the terms:
-3(-2 + f) = 21
(-2 * -3 + f * -3) = 21
(6 + -3f) = 21

Solving
6 + -3f = 21

Solving for variable 'f'.

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

Add '-6' to each side of the equation.
6 + -6 + -3f = 21 + -6

Combine like terms: 6 + -6 = 0
0 + -3f = 21 + -6
-3f = 21 + -6

Combine like terms: 21 + -6 = 15
-3f = 15

Divide each side by '-3'.
f = -5

Simplifying
f = -5

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