X /Y can be used to represent class a and class b respectively. Let Class A be X, Class B be Y, and Class A has two fewer people than Class B, that is to say
X+2 = Class A has 1/3 students, Class B has 1/2 students, and both classes have * * * 4 1 students, so X/3+Y/2 = 4 1.
By solving the formula, it is found that there are 48 students in Class A and 50 students in Class B. ..
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