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7x+4/2=9
We move all terms to the left:
7x+4/2-(9)=0
determiningTheFunctionDomain 7x-9+4/2=0
We add all the numbers together, and all the variables
7x-7=0
We move all terms containing x to the left, all other terms to the right
7x=7
x=7/7
x=1
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