Subtract 45/72 from 12/15, Solve 12/15

Subtract 45/72 from 12/15

12/15 - 45/72 is 7/40.

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

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 15 × 24 = 360,
12/15 = 12 × 24/15 × 24 = 288/360
Likewise, for the 2nd fraction, since 72 × 5 = 360,
45/72 = 45 × 5/72 × 5 = 225/360
Subtract the two like fractions:
288/360 - 225/360 = 288 - 225/360 = 63/360
After reducing the fraction, the answer is 7/40

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