Subtract 21/8 from 35/20
1st number: 1 15/20, 2nd number: 2 5/8
35/20 - 21/8 is -7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
35/20 = 35 × 2/20 × 2 = 70/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
21/8 = 21 × 5/8 × 5 = 105/40 - Subtract the two like fractions:
70/40 - 105/40 = 70 - 105/40 = -35/40 - After reducing the fraction, the answer is -7/8
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