8f+9=18-f-9

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Solution for 8f+9=18-f-9 equation: 



8f+9=18-f-9

We move all terms to the left:

8f+9-(18-f-9)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

8f+1f-9+9=0

We add all the numbers together, and all the variables

9f=0

f=0/9

f=0

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