Add 81/90 and 80/63
1st number: 81/90, 2nd number: 1 17/63
81/90 + 80/63 is 1367/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
80/63 = 80 × 10/63 × 10 = 800/630 - Add the two like fractions:
567/630 + 800/630 = 567 + 800/630 = 1367/630 - So, 81/90 + 80/63 = 1367/630
In mixed form: 2107/630
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