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665982401378132943x+3=78
We move all terms to the left:
665982401378132943x+3-(78)=0
We add all the numbers together, and all the variables
665982401378132943x-75=0
We move all terms containing x to the left, all other terms to the right
665982401378132943x=75
x=75/665982401378132943
x=25/221994133792710981
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