Add 18/9 and 21/10
1st number: 2 0/9, 2nd number: 2 1/10
18/9 + 21/10 is 41/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
18/9 = 18 × 10/9 × 10 = 180/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Add the two like fractions:
180/90 + 189/90 = 180 + 189/90 = 369/90 - 369/90 simplified gives 41/10
- So, 18/9 + 21/10 = 41/10
In mixed form: 41/10
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