3f+4.5=7.5

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Solution for 3f+4.5=7.5 equation: 



3f+4.5=7.5

We move all terms to the left:

3f+4.5-(7.5)=0

We add all the numbers together, and all the variables

3f-3=0

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

3f=3

f=3/3

f=1

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