Add 45/8 and 20/21
1st number: 5 5/8, 2nd number: 20/21
45/8 + 20/21 is 1105/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
45/8 = 45 × 21/8 × 21 = 945/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
20/21 = 20 × 8/21 × 8 = 160/168 - Add the two like fractions:
945/168 + 160/168 = 945 + 160/168 = 1105/168 - So, 45/8 + 20/21 = 1105/168
In mixed form: 697/168
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