2f-12=3f+9

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Solution for 2f-12=3f+9 equation:


Simplifying
2f + -12 = 3f + 9

Reorder the terms:
-12 + 2f = 3f + 9

Reorder the terms:
-12 + 2f = 9 + 3f

Solving
-12 + 2f = 9 + 3f

Solving for variable 'f'.

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

Add '-3f' to each side of the equation.
-12 + 2f + -3f = 9 + 3f + -3f

Combine like terms: 2f + -3f = -1f
-12 + -1f = 9 + 3f + -3f

Combine like terms: 3f + -3f = 0
-12 + -1f = 9 + 0
-12 + -1f = 9

Add '12' to each side of the equation.
-12 + 12 + -1f = 9 + 12

Combine like terms: -12 + 12 = 0
0 + -1f = 9 + 12
-1f = 9 + 12

Combine like terms: 9 + 12 = 21
-1f = 21

Divide each side by '-1'.
f = -21

Simplifying
f = -21

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