-21+7f=-5(3f-6)

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Solution for -21+7f=-5(3f-6) equation: 



-21+7f=-5(3f-6)

We move all terms to the left:

-21+7f-(-5(3f-6))=0



We calculate terms in parentheses: -(-5(3f-6)), so:

-5(3f-6)

We multiply parentheses

-15f+30

Back to the equation:

-(-15f+30)



We get rid of parentheses

7f+15f-30-21=0

We add all the numbers together, and all the variables

22f-51=0

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

22f=51

f=51/22

f=2+7/22

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