Add 15/9 and 21/90
1st number: 1 6/9, 2nd number: 21/90
15/9 + 21/90 is 19/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
15/9 = 15 × 10/9 × 10 = 150/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Add the two like fractions:
150/90 + 21/90 = 150 + 21/90 = 171/90 - 171/90 simplified gives 19/10
- So, 15/9 + 21/90 = 19/10
In mixed form: 19/10
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