7(f-5)=4(f-3.5)

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Solution for 7(f-5)=4(f-3.5) equation: 



7(f-5)=4(f-3.5)

We move all terms to the left:

7(f-5)-(4(f-3.5))=0

We multiply parentheses

7f-(4(f-3.5))-35=0



We calculate terms in parentheses: -(4(f-3.5)), so:

4(f-3.5)

We multiply parentheses

4f-14

Back to the equation:

-(4f-14)



We get rid of parentheses

7f-4f+14-35=0

We add all the numbers together, and all the variables

3f-21=0

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

3f=21

f=21/3

f=7

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