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j+20=2/3(2j+20)
We move all terms to the left:
j+20-(2/3(2j+20))=0
Domain of the equation: 3(2j+20))!=0We multiply all the terms by the denominator
j∈R
j*3(2j+20))-(2+20*3(2j+20))=0
Wy multiply elements
3j^2(2+60j(2=0
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