Add 18/36 and 25/21
1st number: 18/36, 2nd number: 1 4/21
18/36 + 25/21 is 71/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
18/36 = 18 × 7/36 × 7 = 126/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
25/21 = 25 × 12/21 × 12 = 300/252 - Add the two like fractions:
126/252 + 300/252 = 126 + 300/252 = 426/252 - 426/252 simplified gives 71/42
- So, 18/36 + 25/21 = 71/42
In mixed form: 129/42
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