Add 20/42 and 7/18
20/42 + 7/18 is 109/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
20/42 = 20 × 3/42 × 3 = 60/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
7/18 = 7 × 7/18 × 7 = 49/126 - Add the two like fractions:
60/126 + 49/126 = 60 + 49/126 = 109/126 - So, 20/42 + 7/18 = 109/126
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