Subtract 21/72 from 24/30
24/30 - 21/72 is 61/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
24/30 = 24 × 12/30 × 12 = 288/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Subtract the two like fractions:
288/360 - 105/360 = 288 - 105/360 = 183/360 - After reducing the fraction, the answer is 61/120
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