3f+7=f+5

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Solution for 3f+7=f+5 equation: 



3f+7=f+5

We move all terms to the left:

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

We get rid of parentheses

3f-f-5+7=0

We add all the numbers together, and all the variables

2f+2=0

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

2f=-2

f=-2/2

f=-1

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