Subtract 21/8 from 7/15
1st number: 7/15, 2nd number: 2 5/8
715 - 218 is -259120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
715 = 7 × 815 × 8 = 56120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
218 = 21 × 158 × 15 = 315120 - Subtract the two like fractions:
56120 - 315120 = 56 - 315120 = -259120
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