Add 21/5 and 40/9
1st number: 4 1/5, 2nd number: 4 4/9
21/5 + 40/9 is 389/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
21/5 = 21 × 9/5 × 9 = 189/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
40/9 = 40 × 5/9 × 5 = 200/45 - Add the two like fractions:
189/45 + 200/45 = 189 + 200/45 = 389/45 - So, 21/5 + 40/9 = 389/45
In mixed form: 829/45
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