Add 21/90 and 7/3
1st number: 21/90, 2nd number: 2 1/3
21/90 + 7/3 is 77/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 3 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Likewise, for the 2nd fraction, since 3 × 30 = 90,
7/3 = 7 × 30/3 × 30 = 210/90 - Add the two like fractions:
21/90 + 210/90 = 21 + 210/90 = 231/90 - 231/90 simplified gives 77/30
- So, 21/90 + 7/3 = 77/30
In mixed form: 217/30
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