4f+3=7f-12

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Solution for 4f+3=7f-12 equation: 



4f+3=7f-12

We move all terms to the left:

4f+3-(7f-12)=0

We get rid of parentheses

4f-7f+12+3=0

We add all the numbers together, and all the variables

-3f+15=0

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

-3f=-15

f=-15/-3

f=+5

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