Add 81/90 and 90/63
1st number: 81/90, 2nd number: 1 27/63
81/90 + 90/63 is 163/70.
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,
90/63 = 90 × 10/63 × 10 = 900/630 - Add the two like fractions:
567/630 + 900/630 = 567 + 900/630 = 1467/630 - 1467/630 simplified gives 163/70
- So, 81/90 + 90/63 = 163/70
In mixed form: 223/70
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