13-f=-3f-17

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Solution for 13-f=-3f-17 equation: 



13-f=-3f-17

We move all terms to the left:

13-f-(-3f-17)=0

We add all the numbers together, and all the variables

-1f-(-3f-17)+13=0

We get rid of parentheses

-1f+3f+17+13=0

We add all the numbers together, and all the variables

2f+30=0

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

2f=-30

f=-30/2

f=-15

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