Add 18/45 and 21/10
1st number: 18/45, 2nd number: 2 1/10
18/45 + 21/10 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
18/45 = 18 × 2/45 × 2 = 36/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Add the two like fractions:
36/90 + 189/90 = 36 + 189/90 = 225/90 - 225/90 simplified gives 5/2
- So, 18/45 + 21/10 = 5/2
In mixed form: 21/2
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