Solve for x
x=21
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2x+1+2=45
Combine x and x to get 2x.
2x+3=45
Add 1 and 2 to get 3.
2x=45-3
Subtract 3 from both sides.
2x=42
Subtract 3 from 45 to get 42.
x=\frac{42}{2}
Divide both sides by 2.
x=21
Divide 42 by 2 to get 21.
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