Subtract 21/7 from 20/5
1st number: 4 0/5, 2nd number: 3 0/7
20/5 - 21/7 is 1/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
20/5 = 20 × 7/5 × 7 = 140/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
21/7 = 21 × 5/7 × 5 = 105/35 - Subtract the two like fractions:
140/35 - 105/35 = 140 - 105/35 = 35/35 - After reducing the fraction, the answer is 1/1
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