Subtract 81/63 from 20/10
1st number: 2 0/10, 2nd number: 1 18/63
20/10 - 81/63 is 5/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 10 × 63 = 630,
20/10 = 20 × 63/10 × 63 = 1260/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
81/63 = 81 × 10/63 × 10 = 810/630 - Subtract the two like fractions:
1260/630 - 810/630 = 1260 - 810/630 = 450/630 - After reducing the fraction, the answer is 5/7
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