Add 27/42 and 72/20
1st number: 27/42, 2nd number: 3 12/20
27/42 + 72/20 is 297/70.
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,
27/42 = 27 × 10/42 × 10 = 270/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
72/20 = 72 × 21/20 × 21 = 1512/420 - Add the two like fractions:
270/420 + 1512/420 = 270 + 1512/420 = 1782/420 - 1782/420 simplified gives 297/70
- So, 27/42 + 72/20 = 297/70
In mixed form: 417/70
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