Subtract 15/21 from 10/24
10/24 - 15/21 is -25/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
10/24 = 10 × 7/24 × 7 = 70/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
15/21 = 15 × 8/21 × 8 = 120/168 - Subtract the two like fractions:
70/168 - 120/168 = 70 - 120/168 = -50/168 - After reducing the fraction, the answer is -25/84
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