Add 90/9 and 81/70
1st number: 10 0/9, 2nd number: 1 11/70
90/9 + 81/70 is 781/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
90/9 = 90 × 70/9 × 70 = 6300/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
81/70 = 81 × 9/70 × 9 = 729/630 - Add the two like fractions:
6300/630 + 729/630 = 6300 + 729/630 = 7029/630 - 7029/630 simplified gives 781/70
- So, 90/9 + 81/70 = 781/70
In mixed form: 1111/70
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