3(5+f)-12=40

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Solution for 3(5+f)-12=40 equation: 



3(5+f)-12=40

We move all terms to the left:

3(5+f)-12-(40)=0

We add all the numbers together, and all the variables

3(f+5)-12-40=0

We add all the numbers together, and all the variables

3(f+5)-52=0

We multiply parentheses

3f+15-52=0

We add all the numbers together, and all the variables

3f-37=0

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

3f=37

f=37/3

f=12+1/3

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