Subtract 10/72 from 21/8
1st number: 2 5/8, 2nd number: 10/72
21/8 - 10/72 is 179/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
21/8 = 21 × 9/8 × 9 = 189/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
10/72 = 10 × 1/72 × 1 = 10/72 - Subtract the two like fractions:
189/72 - 10/72 = 189 - 10/72 = 179/72 - In mixed form: 235/72
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