-12=8+f/7

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Solution for -12=8+f/7 equation: 



-12=8+f/7

We move all terms to the left:

-12-(8+f/7)=0

We add all the numbers together, and all the variables

-(f/7+8)-12=0

We get rid of parentheses

-f/7-8-12=0

We multiply all the terms by the denominator


-f-8*7-12*7=0

We add all the numbers together, and all the variables

-1f-140=0

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

-f=140

f=140/-1

f=-140

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