Let the number of stamps Jaylan has be represented as \( x \).
According to the problem, if he multiplies that number by 5 and then subtracts 10, he gets 275. We can write this as the equation:
\[ 5x - 10 = 275 \]
Now, we can solve for \( x \):
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Add 10 to both sides of the equation:
\[ 5x = 275 + 10 \] \[ 5x = 285 \]
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Now, divide both sides by 5:
\[ x = \frac{285}{5} \] \[ x = 57 \]
So, Jaylan has 57 stamps.