7f+6=21

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Solution for 7f+6=21 equation: 


Simplifying
7f + 6 = 21

Reorder the terms:
6 + 7f = 21

Solving
6 + 7f = 21

Solving for variable 'f'.

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

Add '-6' to each side of the equation.
6 + -6 + 7f = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 7f = 21 + -6
7f = 21 + -6

Combine like terms: 21 + -6 = 15
7f = 15

Divide each side by '7'.
f = 2.142857143

Simplifying
f = 2.142857143

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