8f+9=7f+1

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Solution for 8f+9=7f+1 equation: 



8f+9=7f+1

We move all terms to the left:

8f+9-(7f+1)=0

We get rid of parentheses

8f-7f-1+9=0

We add all the numbers together, and all the variables

f+8=0

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

f=-8

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