Add 20/21 and 72/8
1st number: 20/21, 2nd number: 9 0/8
20/21 + 72/8 is 209/21.
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,
20/21 = 20 × 8/21 × 8 = 160/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
72/8 = 72 × 21/8 × 21 = 1512/168 - Add the two like fractions:
160/168 + 1512/168 = 160 + 1512/168 = 1672/168 - 1672/168 simplified gives 209/21
- So, 20/21 + 72/8 = 209/21
In mixed form: 920/21
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