7f+8+3=-31

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Solution for 7f+8+3=-31 equation: 



7f+8+3=-31

We move all terms to the left:

7f+8+3-(-31)=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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