Answer:
(x + 3)(5x + 2)
Step-by-step explanation:

The answer is 16 shirts. (in the equation below, x represents how many shirts he sold.)
We can solve this question by using this equation: 3x + 45 = 93
The next step would be to subtract 45 from both sides, which would leave us with 3x=48.
Then, we must divide both sides by 3. This means 3x divided by 3 = 48 divided by 3. This leaves us with x = 16 shirts.
Answer:
the student messed up at the point of adding 5 to I5, they subtracted instead and got 2x=I0 which would mean x=5. when instead they should've added 5 and got 2x=20 and got x=I0