Solve for x
x = \frac{220}{3} = 73\frac{1}{3} \approx 73.333333333
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3x-100=120
Swap sides so that all variable terms are on the left hand side.
3x=120+100
Add 100 to both sides.
3x=220
Add 120 and 100 to get 220.
x=\frac{220}{3}
Divide both sides by 3.
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