Subtract 4/81 from 50/20
1st number: 2 10/20, 2nd number: 4/81
50/20 - 4/81 is 397/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 20 × 81 = 1620,
50/20 = 50 × 81/20 × 81 = 4050/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
4/81 = 4 × 20/81 × 20 = 80/1620 - Subtract the two like fractions:
4050/1620 - 80/1620 = 4050 - 80/1620 = 3970/1620 - After reducing the fraction, the answer is 397/162
- In mixed form: 273/162
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