The first step here is to make the two fractions the same. sure

could work but what we would do about the

? Let's make them both the same by multiplying the 15 by the other's denominator, 8
15 x 8 = 120
Let's compare the two fractions

Now what we do is divide the 120 by the 3.
120 / 3 = 40
40 must be the answer! I hope I helped!