Subtract 21/15 from 7/14
1st number: 7/14, 2nd number: 1 6/15
7/14 - 21/15 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
7/14 = 7 × 15/14 × 15 = 105/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
21/15 = 21 × 14/15 × 14 = 294/210 - Subtract the two like fractions:
105/210 - 294/210 = 105 - 294/210 = -189/210 - After reducing the fraction, the answer is -9/10
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