Subtract 45/15 from 9/72, Solve 9/72

Subtract 45/15 from 9/72

1^st number: 9/72, 2^nd number: 3 0/15

9/72 - 45/15 is -23/8.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 15 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360
Likewise, for the 2nd fraction, since 15 × 24 = 360,
45/15 = 45 × 24/15 × 24 = 1080/360
Subtract the two like fractions:
45/360 - 1080/360 = 45 - 1080/360 = -1035/360
After reducing the fraction, the answer is -23/8

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