-57=-12+3f

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Solution for -57=-12+3f equation:


Simplifying
-57 = -12 + 3f

Solving
-57 = -12 + 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.
-57 + -3f = -12 + 3f + -3f

Combine like terms: 3f + -3f = 0
-57 + -3f = -12 + 0
-57 + -3f = -12

Add '57' to each side of the equation.
-57 + 57 + -3f = -12 + 57

Combine like terms: -57 + 57 = 0
0 + -3f = -12 + 57
-3f = -12 + 57

Combine like terms: -12 + 57 = 45
-3f = 45

Divide each side by '-3'.
f = -15

Simplifying
f = -15

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