Add 40/21 and 5/8
1st number: 1 19/21, 2nd number: 5/8
40/21 + 5/8 is 425/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
40/21 = 40 × 8/21 × 8 = 320/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
5/8 = 5 × 21/8 × 21 = 105/168 - Add the two like fractions:
320/168 + 105/168 = 320 + 105/168 = 425/168 - So, 40/21 + 5/8 = 425/168
In mixed form: 289/168
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