30-f+8f=30

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Solution for 30-f+8f=30 equation: 


Simplifying
30 + -1f + 8f = 30

Combine like terms: -1f + 8f = 7f
30 + 7f = 30

Add '-30' to each side of the equation.
30 + -30 + 7f = 30 + -30

Combine like terms: 30 + -30 = 0
0 + 7f = 30 + -30
7f = 30 + -30

Combine like terms: 30 + -30 = 0
7f = 0

Solving
7f = 0

Solving for variable 'f'.

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

Divide each side by '7'.
f = 0

Simplifying
f = 0

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