3f-12=3(f-21)

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Solution for 3f-12=3(f-21) equation: 


Simplifying
3f + -12 = 3(f + -21)

Reorder the terms:
-12 + 3f = 3(f + -21)

Reorder the terms:
-12 + 3f = 3(-21 + f)
-12 + 3f = (-21 * 3 + f * 3)
-12 + 3f = (-63 + 3f)

Add '-3f' to each side of the equation.
-12 + 3f + -3f = -63 + 3f + -3f

Combine like terms: 3f + -3f = 0
-12 + 0 = -63 + 3f + -3f
-12 = -63 + 3f + -3f

Combine like terms: 3f + -3f = 0
-12 = -63 + 0
-12 = -63

Solving
-12 = -63

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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