6f-21=39

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Solution for 6f-21=39 equation: 


Simplifying
6f + -21 = 39

Reorder the terms:
-21 + 6f = 39

Solving
-21 + 6f = 39

Solving for variable 'f'.

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

Add '21' to each side of the equation.
-21 + 21 + 6f = 39 + 21

Combine like terms: -21 + 21 = 0
0 + 6f = 39 + 21
6f = 39 + 21

Combine like terms: 39 + 21 = 60
6f = 60

Divide each side by '6'.
f = 10

Simplifying
f = 10

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