Solve for x
x = \frac{669}{2} = 334\frac{1}{2} = 334.5
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3+x+x=672
Add 1 and 2 to get 3.
3+2x=672
Combine x and x to get 2x.
2x=672-3
Subtract 3 from both sides.
2x=669
Subtract 3 from 672 to get 669.
x=\frac{669}{2}
Divide both sides by 2.
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