Solve for n
n=7
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3n-3+2=20
Combine 2n and n to get 3n.
3n-1=20
Add -3 and 2 to get -1.
3n=20+1
Add 1 to both sides.
3n=21
Add 20 and 1 to get 21.
n=\frac{21}{3}
Divide both sides by 3.
n=7
Divide 21 by 3 to get 7.
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