Subtract 42/7 from 20/3
1st number: 6 2/3, 2nd number: 6 0/7
20/3 - 42/7 is 2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
20/3 = 20 × 7/3 × 7 = 140/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
42/7 = 42 × 3/7 × 3 = 126/21 - Subtract the two like fractions:
140/21 - 126/21 = 140 - 126/21 = 14/21 - After reducing the fraction, the answer is 2/3
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