12-f+2-3f=21+6f

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Solution for 12-f+2-3f=21+6f equation:


Simplifying
12 + -1f + 2 + -3f = 21 + 6f

Reorder the terms:
12 + 2 + -1f + -3f = 21 + 6f

Combine like terms: 12 + 2 = 14
14 + -1f + -3f = 21 + 6f

Combine like terms: -1f + -3f = -4f
14 + -4f = 21 + 6f

Solving
14 + -4f = 21 + 6f

Solving for variable 'f'.

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

Add '-6f' to each side of the equation.
14 + -4f + -6f = 21 + 6f + -6f

Combine like terms: -4f + -6f = -10f
14 + -10f = 21 + 6f + -6f

Combine like terms: 6f + -6f = 0
14 + -10f = 21 + 0
14 + -10f = 21

Add '-14' to each side of the equation.
14 + -14 + -10f = 21 + -14

Combine like terms: 14 + -14 = 0
0 + -10f = 21 + -14
-10f = 21 + -14

Combine like terms: 21 + -14 = 7
-10f = 7

Divide each side by '-10'.
f = -0.7

Simplifying
f = -0.7

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