Subtract 21/6 from 40/21
1st number: 1 19/21, 2nd number: 3 3/6
4021 - 216 is -6742.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
4021 = 40 × 221 × 2 = 8042 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
216 = 21 × 76 × 7 = 14742 - Subtract the two like fractions:
8042 - 14742 = 80 - 14742 = -6742
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