Add 28/9 and 81/70
1st number: 3 1/9, 2nd number: 1 11/70
28/9 + 81/70 is 2689/630.
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,
28/9 = 28 × 70/9 × 70 = 1960/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
81/70 = 81 × 9/70 × 9 = 729/630 - Add the two like fractions:
1960/630 + 729/630 = 1960 + 729/630 = 2689/630 - So, 28/9 + 81/70 = 2689/630
In mixed form: 4169/630
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