Add 60/20 and 70/21
1st number: 3 0/20, 2nd number: 3 7/21
60/20 + 70/21 is 19/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
60/20 = 60 × 21/20 × 21 = 1260/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
70/21 = 70 × 20/21 × 20 = 1400/420 - Add the two like fractions:
1260/420 + 1400/420 = 1260 + 1400/420 = 2660/420 - 2660/420 simplified gives 19/3
- So, 60/20 + 70/21 = 19/3
In mixed form: 61/3
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