8f-12=7f-9

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Solution for 8f-12=7f-9 equation:


Simplifying
8f + -12 = 7f + -9

Reorder the terms:
-12 + 8f = 7f + -9

Reorder the terms:
-12 + 8f = -9 + 7f

Solving
-12 + 8f = -9 + 7f

Solving for variable 'f'.

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

Add '-7f' to each side of the equation.
-12 + 8f + -7f = -9 + 7f + -7f

Combine like terms: 8f + -7f = 1f
-12 + 1f = -9 + 7f + -7f

Combine like terms: 7f + -7f = 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 = 3
1f = 3

Divide each side by '1'.
f = 3

Simplifying
f = 3

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