Add 21/18 and 42/36
1st number: 1 3/18, 2nd number: 1 6/36
21/18 + 42/36 is 7/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
42/36 = 42 × 1/36 × 1 = 42/36 - Add the two like fractions:
42/36 + 42/36 = 42 + 42/36 = 84/36 - 84/36 simplified gives 7/3
- So, 21/18 + 42/36 = 7/3
In mixed form: 21/3
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