Add 27/42 and 20/7
1st number: 27/42, 2nd number: 2 6/7
27/42 + 20/7 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
27/42 = 27 × 1/42 × 1 = 27/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
20/7 = 20 × 6/7 × 6 = 120/42 - Add the two like fractions:
27/42 + 120/42 = 27 + 120/42 = 147/42 - 147/42 simplified gives 7/2
- So, 27/42 + 20/7 = 7/2
In mixed form: 31/2
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