Add 21/45 and 15/10
1st number: 21/45, 2nd number: 1 5/10
21/45 + 15/10 is 59/30.
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,
21/45 = 21 × 2/45 × 2 = 42/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
15/10 = 15 × 9/10 × 9 = 135/90 - Add the two like fractions:
42/90 + 135/90 = 42 + 135/90 = 177/90 - 177/90 simplified gives 59/30
- So, 21/45 + 15/10 = 59/30
In mixed form: 129/30
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