The number of students that are on the track team are 18.
The number of students that are on the baseball team are 15.
a + b = 33 equation 1
a - b = 3 equation 2
Where:
Subtract equation 2 from equation 1
2b = 30
Divide both sides by 2
b = 30/2 = 15
Subtract 15 from 33: 33 - 15 = 18
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