Add 20/21 and 35/60
20/21 + 35/60 is 43/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
20/21 = 20 × 20/21 × 20 = 400/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
35/60 = 35 × 7/60 × 7 = 245/420 - Add the two like fractions:
400/420 + 245/420 = 400 + 245/420 = 645/420 - 645/420 simplified gives 43/28
- So, 20/21 + 35/60 = 43/28
In mixed form: 115/28
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