Subtract 49/42 from 21/5
1st number: 4 1/5, 2nd number: 1 7/42
21/5 - 49/42 is 91/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
21/5 = 21 × 42/5 × 42 = 882/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
49/42 = 49 × 5/42 × 5 = 245/210 - Subtract the two like fractions:
882/210 - 245/210 = 882 - 245/210 = 637/210 - After reducing the fraction, the answer is 91/30
- In mixed form: 31/30
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