3/4f+21=18

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Solution for 3/4f+21=18 equation: 



3/4f+21=18

We move all terms to the left:

3/4f+21-(18)=0



Domain of the equation: 4f!=0

f!=0/4

f!=0

f∈R



We add all the numbers together, and all the variables

3/4f+3=0

We multiply all the terms by the denominator


3*4f+3=0

Wy multiply elements

12f+3=0

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

12f=-3

f=-3/12

f=-1/4

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