Subtract 7/81 from 98/20
1st number: 4 18/20, 2nd number: 7/81
98/20 - 7/81 is 3899/810.
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,
98/20 = 98 × 81/20 × 81 = 7938/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
7/81 = 7 × 20/81 × 20 = 140/1620 - Subtract the two like fractions:
7938/1620 - 140/1620 = 7938 - 140/1620 = 7798/1620 - After reducing the fraction, the answer is 3899/810
- In mixed form: 4659/810
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