Subtract 21/7 from 20/24
1st number: 20/24, 2nd number: 3 0/7
20/24 - 21/7 is -13/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 7 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Likewise, for the 2nd fraction, since 7 × 24 = 168,
21/7 = 21 × 24/7 × 24 = 504/168 - Subtract the two like fractions:
140/168 - 504/168 = 140 - 504/168 = -364/168 - After reducing the fraction, the answer is -13/6
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