Subtract 15/6 from 40/21
1st number: 1 19/21, 2nd number: 2 3/6
4021 - 156 is -2542.
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,
156 = 15 × 76 × 7 = 10542 - Subtract the two like fractions:
8042 - 10542 = 80 - 10542 = -2542
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