7.5=f+-2.5

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Solution for 7.5=f+-2.5 equation: 



7.5=f+-2.5

We move all terms to the left:

7.5-(f+-2.5)=0

We add all the numbers together, and all the variables

-(f-2.5)+7.5=0

We get rid of parentheses

-f+2.5+7.5=0

We add all the numbers together, and all the variables

-1f+10=0

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

-f=-10

f=-10/-1

f=+10

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