15f+(-8f)+13=55

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Solution for 15f+(-8f)+13=55 equation: 



15f+(-8f)+13=55

We move all terms to the left:

15f+(-8f)+13-(55)=0

We add all the numbers together, and all the variables

15f+(-8f)-42=0

We get rid of parentheses

15f-8f-42=0

We add all the numbers together, and all the variables

7f-42=0

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

7f=42

f=42/7

f=6

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