Subtract 21/72 from 15/27
15/27 - 21/72 is 19/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 72 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 27 × 8 = 216,
15/27 = 15 × 8/27 × 8 = 120/216 - Likewise, for the 2nd fraction, since 72 × 3 = 216,
21/72 = 21 × 3/72 × 3 = 63/216 - Subtract the two like fractions:
120/216 - 63/216 = 120 - 63/216 = 57/216 - After reducing the fraction, the answer is 19/72
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