Subtract 70/21 from 4/2
1st number: 2 0/2, 2nd number: 3 7/21
42 - 7021 is -43.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
42 = 4 × 212 × 21 = 8442 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
7021 = 70 × 221 × 2 = 14042 - Subtract the two like fractions:
8442 - 14042 = 84 - 14042 = -5642 - After reducing the fraction, the answer is -43
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