Add 70/90 and 21/9
1st number: 70/90, 2nd number: 2 3/9
70/90 + 21/9 is 28/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Add the two like fractions:
70/90 + 210/90 = 70 + 210/90 = 280/90 - 280/90 simplified gives 28/9
- So, 70/90 + 21/9 = 28/9
In mixed form: 31/9
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