7-7f=-8-9f+1

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



7-7f=-8-9f+1

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-7f+9f+7+7=0

We add all the numbers together, and all the variables

2f+14=0

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

2f=-14

f=-14/2

f=-7

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