30=-5f-7f

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Solution for 30=-5f-7f equation: 



30=-5f-7f

We move all terms to the left:

30-(-5f-7f)=0

We add all the numbers together, and all the variables

-(-12f)+30=0

We get rid of parentheses

12f+30=0

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

12f=-30

f=-30/12

f=-2+1/2

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