13-15-12f=-7-13f

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Solution for 13-15-12f=-7-13f equation: 



13-15-12f=-7-13f

We move all terms to the left:

13-15-12f-(-7-13f)=0

We add all the numbers together, and all the variables

-12f-(-13f-7)+13-15=0

We add all the numbers together, and all the variables

-12f-(-13f-7)-2=0

We get rid of parentheses

-12f+13f+7-2=0

We add all the numbers together, and all the variables

f+5=0

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

f=-5

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