Add 40/9 and 21/8
1st number: 4 4/9, 2nd number: 2 5/8
40/9 + 21/8 is 509/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
40/9 = 40 × 8/9 × 8 = 320/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
21/8 = 21 × 9/8 × 9 = 189/72 - Add the two like fractions:
320/72 + 189/72 = 320 + 189/72 = 509/72 - So, 40/9 + 21/8 = 509/72
In mixed form: 75/72
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