Add 21/36 and 84/42
1st number: 21/36, 2nd number: 2 0/42
21/36 + 84/42 is 31/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 42 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Likewise, for the 2nd fraction, since 42 × 6 = 252,
84/42 = 84 × 6/42 × 6 = 504/252 - Add the two like fractions:
147/252 + 504/252 = 147 + 504/252 = 651/252 - 651/252 simplified gives 31/12
- So, 21/36 + 84/42 = 31/12
In mixed form: 27/12
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