Add 21/4 and 30/9
1st number: 5 1/4, 2nd number: 3 3/9
21/4 + 30/9 is 103/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
21/4 = 21 × 9/4 × 9 = 189/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
30/9 = 30 × 4/9 × 4 = 120/36 - Add the two like fractions:
189/36 + 120/36 = 189 + 120/36 = 309/36 - 309/36 simplified gives 103/12
- So, 21/4 + 30/9 = 103/12
In mixed form: 87/12
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