Add 3/42 and 27/20
1st number: 3/42, 2nd number: 1 7/20
3/42 + 27/20 is 199/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
3/42 = 3 × 10/42 × 10 = 30/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
27/20 = 27 × 21/20 × 21 = 567/420 - Add the two like fractions:
30/420 + 567/420 = 30 + 567/420 = 597/420 - 597/420 simplified gives 199/140
- So, 3/42 + 27/20 = 199/140
In mixed form: 159/140
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