Add 72/21 and 63/36
1st number: 3 9/21, 2nd number: 1 27/36
72/21 + 63/36 is 145/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
72/21 = 72 × 12/21 × 12 = 864/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
63/36 = 63 × 7/36 × 7 = 441/252 - Add the two like fractions:
864/252 + 441/252 = 864 + 441/252 = 1305/252 - 1305/252 simplified gives 145/28
- So, 72/21 + 63/36 = 145/28
In mixed form: 55/28
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