Add 72/36 and 15/21
1st number: 2 0/36, 2nd number: 15/21
72/36 + 15/21 is 19/7.
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,
72/36 = 72 × 7/36 × 7 = 504/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
15/21 = 15 × 12/21 × 12 = 180/252 - Add the two like fractions:
504/252 + 180/252 = 504 + 180/252 = 684/252 - 684/252 simplified gives 19/7
- So, 72/36 + 15/21 = 19/7
In mixed form: 25/7
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