Add 20/21 and 80/35
1st number: 20/21, 2nd number: 2 10/35
20/21 + 80/35 is 68/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
20/21 = 20 × 5/21 × 5 = 100/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
80/35 = 80 × 3/35 × 3 = 240/105 - Add the two like fractions:
100/105 + 240/105 = 100 + 240/105 = 340/105 - 340/105 simplified gives 68/21
- So, 20/21 + 80/35 = 68/21
In mixed form: 35/21
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