Subtract 20/81 from 42/6
1st number: 7 0/6, 2nd number: 20/81
42/6 - 20/81 is 547/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 6 × 27 = 162,
42/6 = 42 × 27/6 × 27 = 1134/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
20/81 = 20 × 2/81 × 2 = 40/162 - Subtract the two like fractions:
1134/162 - 40/162 = 1134 - 40/162 = 1094/162 - After reducing the fraction, the answer is 547/81
- In mixed form: 661/81
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