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(2x+1)20=3
We move all terms to the left:
(2x+1)20-(3)=0
We multiply parentheses
40x+20-3=0
We add all the numbers together, and all the variables
40x+17=0
We move all terms containing x to the left, all other terms to the right
40x=-17
x=-17/40
x=-17/40
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