Subtract 20/21 from 40/6
1st number: 6 4/6, 2nd number: 20/21
40/6 - 20/21 is 40/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
40/6 = 40 × 7/6 × 7 = 280/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42 - Subtract the two like fractions:
280/42 - 40/42 = 280 - 40/42 = 240/42 - After reducing the fraction, the answer is 40/7
- In mixed form: 55/7
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