The expressions that gives the number of online math classes is as follows:
y = x - 15
How to express an equation?
The number of math classes offered online in the summer is 15 less than the number of math classes offered face-to face in the summer.
Let
the number of math classes offered face-to face = x
the number of math classes offered online = y
Therefore, the expression that gives the number of online math classes is as follows:
y = x - 15
x = y + 15
Hence,
y = x - 15
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