3(2+f)=90

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Solution for 3(2+f)=90 equation: 



3(2+f)=90

We move all terms to the left:

3(2+f)-(90)=0

We add all the numbers together, and all the variables

3(f+2)-90=0

We multiply parentheses

3f+6-90=0

We add all the numbers together, and all the variables

3f-84=0

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

3f=84

f=84/3

f=28

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