Subtract 70/81 from 63/20
1st number: 3 3/20, 2nd number: 70/81
63/20 - 70/81 is 3703/1620.
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,
63/20 = 63 × 81/20 × 81 = 5103/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
70/81 = 70 × 20/81 × 20 = 1400/1620 - Subtract the two like fractions:
5103/1620 - 1400/1620 = 5103 - 1400/1620 = 3703/1620 - In mixed form: 2463/1620
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