Add 21/18 and 42/49
1st number: 1 3/18, 2nd number: 42/49
21/18 + 42/49 is 85/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 49 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 18 × 49 = 882,
21/18 = 21 × 49/18 × 49 = 1029/882 - Likewise, for the 2nd fraction, since 49 × 18 = 882,
42/49 = 42 × 18/49 × 18 = 756/882 - Add the two like fractions:
1029/882 + 756/882 = 1029 + 756/882 = 1785/882 - 1785/882 simplified gives 85/42
- So, 21/18 + 42/49 = 85/42
In mixed form: 21/42
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