Subtract 10/27 from 21/72
21/72 - 10/27 is -17/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
21/72 = 21 × 3/72 × 3 = 63/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
10/27 = 10 × 8/27 × 8 = 80/216 - Subtract the two like fractions:
63/216 - 80/216 = 63 - 80/216 = -17/216
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