Subtract 81/30 from 3/72
1st number: 3/72, 2nd number: 2 21/30
3/72 - 81/30 is -319/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
3/72 = 3 × 5/72 × 5 = 15/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
81/30 = 81 × 12/30 × 12 = 972/360 - Subtract the two like fractions:
15/360 - 972/360 = 15 - 972/360 = -957/360 - After reducing the fraction, the answer is -319/120
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