Solve for x
x = \frac{398}{3} = 132\frac{2}{3} \approx 132.666666667
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3x-15=383
Combine x and x\times 2 to get 3x.
3x=383+15
Add 15 to both sides.
3x=398
Add 383 and 15 to get 398.
x=\frac{398}{3}
Divide both sides by 3.
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