Subtract 21/80 from 90/24
1st number: 3 18/24, 2nd number: 21/80
90/24 - 21/80 is 279/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 24 × 10 = 240,
90/24 = 90 × 10/24 × 10 = 900/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Subtract the two like fractions:
900/240 - 63/240 = 900 - 63/240 = 837/240 - After reducing the fraction, the answer is 279/80
- In mixed form: 339/80
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