-3=3(f-15)

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Solution for -3=3(f-15) equation: 



-3=3(f-15)

We move all terms to the left:

-3-(3(f-15))=0



We calculate terms in parentheses: -(3(f-15)), so:

3(f-15)

We multiply parentheses

3f-45

Back to the equation:

-(3f-45)



We get rid of parentheses

-3f+45-3=0

We add all the numbers together, and all the variables

-3f+42=0

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

-3f=-42

f=-42/-3

f=+14

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