5.5 / 38.25
Let's get rid of the decimals by doing * 4 on the top and bottom:
22 / 153
22 factors into 2 * 11
153 factors into 3 * 3 * 17
22 and 153 don't have any common factors, so there's nothing in 22 / 153 to cancel out
Answer: 22 / 153
.
Or, if you want decimal:
Answer: About 0.143791
.
Did the problem in the book say anything about how it wants the answer? Decimal, fraction, anything like that?