3(-5f+7)=-9

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Solution for 3(-5f+7)=-9 equation: 



3(-5f+7)=-9

We move all terms to the left:

3(-5f+7)-(-9)=0

We add all the numbers together, and all the variables

3(-5f+7)+9=0

We multiply parentheses

-15f+21+9=0

We add all the numbers together, and all the variables

-15f+30=0

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

-15f=-30

f=-30/-15

f=+2

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