9x-2=7y-3,x=(7y- 1)/9
9x & gt50x & gt; 5, and it is an integer.
7y & gt50y & gt; 8 and an integer.
The equation can only be satisfied when the minimum value of y is 13, so there are 88 students in Xiaoming class.
"One" teacher qualification certificate music has not been tested, can I change to another major and re-test?
It should be po