3(f-1)=12

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Solution for 3(f-1)=12 equation: 


Simplifying
3(f + -1) = 12

Reorder the terms:
3(-1 + f) = 12
(-1 * 3 + f * 3) = 12
(-3 + 3f) = 12

Solving
-3 + 3f = 12

Solving for variable 'f'.

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

Add '3' to each side of the equation.
-3 + 3 + 3f = 12 + 3

Combine like terms: -3 + 3 = 0
0 + 3f = 12 + 3
3f = 12 + 3

Combine like terms: 12 + 3 = 15
3f = 15

Divide each side by '3'.
f = 5

Simplifying
f = 5

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