8f-21=-12f+19

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Solution for 8f-21=-12f+19 equation:


Simplifying
8f + -21 = -12f + 19

Reorder the terms:
-21 + 8f = -12f + 19

Reorder the terms:
-21 + 8f = 19 + -12f

Solving
-21 + 8f = 19 + -12f

Solving for variable 'f'.

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

Add '12f' to each side of the equation.
-21 + 8f + 12f = 19 + -12f + 12f

Combine like terms: 8f + 12f = 20f
-21 + 20f = 19 + -12f + 12f

Combine like terms: -12f + 12f = 0
-21 + 20f = 19 + 0
-21 + 20f = 19

Add '21' to each side of the equation.
-21 + 21 + 20f = 19 + 21

Combine like terms: -21 + 21 = 0
0 + 20f = 19 + 21
20f = 19 + 21

Combine like terms: 19 + 21 = 40
20f = 40

Divide each side by '20'.
f = 2

Simplifying
f = 2

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