8f+9+7f=20f-16

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Solution for 8f+9+7f=20f-16 equation: 



8f+9+7f=20f-16

We move all terms to the left:

8f+9+7f-(20f-16)=0

We add all the numbers together, and all the variables

15f-(20f-16)+9=0

We get rid of parentheses

15f-20f+16+9=0

We add all the numbers together, and all the variables

-5f+25=0

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

-5f=-25

f=-25/-5

f=+5

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