Add 70/3 and 20/21
1st number: 23 1/3, 2nd number: 20/21
70/3 + 20/21 is 170/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
70/3 = 70 × 7/3 × 7 = 490/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
20/21 = 20 × 1/21 × 1 = 20/21 - Add the two like fractions:
490/21 + 20/21 = 490 + 20/21 = 510/21 - 510/21 simplified gives 170/7
- So, 70/3 + 20/21 = 170/7
In mixed form: 242/7
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