Add 72/42 and 20/60
1st number: 1 30/42, 2nd number: 20/60
72/42 + 20/60 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
72/42 = 72 × 10/42 × 10 = 720/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
20/60 = 20 × 7/60 × 7 = 140/420 - Add the two like fractions:
720/420 + 140/420 = 720 + 140/420 = 860/420 - 860/420 simplified gives 43/21
- So, 72/42 + 20/60 = 43/21
In mixed form: 21/21
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