Subtract 70/90 from 81/24
1st number: 3 9/24, 2nd number: 70/90
81/24 - 70/90 is 187/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
81/24 = 81 × 15/24 × 15 = 1215/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
70/90 = 70 × 4/90 × 4 = 280/360 - Subtract the two like fractions:
1215/360 - 280/360 = 1215 - 280/360 = 935/360 - After reducing the fraction, the answer is 187/72
- In mixed form: 243/72
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