Add 60/21 and 70/20
1st number: 2 18/21, 2nd number: 3 10/20
60/21 + 70/20 is 89/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
60/21 = 60 × 20/21 × 20 = 1200/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
70/20 = 70 × 21/20 × 21 = 1470/420 - Add the two like fractions:
1200/420 + 1470/420 = 1200 + 1470/420 = 2670/420 - 2670/420 simplified gives 89/14
- So, 60/21 + 70/20 = 89/14
In mixed form: 65/14
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