18-5f=2f+4.

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Solution for 18-5f=2f+4. equation: 



18-5f=2f+4.

We move all terms to the left:

18-5f-(2f+4.)=0

We add all the numbers together, and all the variables

-5f-(2f+4)+18=0

We get rid of parentheses

-5f-2f-4+18=0

We add all the numbers together, and all the variables

-7f+14=0

We move all terms containing f to the left, all other terms to the right

-7f=-14

f=-14/-7

f=+2

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