3x=3(21)=63

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Solution for 3x=3(21)=63 equation: 



3x=3(21)=63

We move all terms to the left:

3x-(3(21))=0

determiningTheFunctionDomain
3x-321=0

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

3x=321

x=321/3

x=107

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