Add 72/28 and 21/18
1st number: 2 16/28, 2nd number: 1 3/18
72/28 + 21/18 is 157/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
72/28 = 72 × 9/28 × 9 = 648/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
21/18 = 21 × 14/18 × 14 = 294/252 - Add the two like fractions:
648/252 + 294/252 = 648 + 294/252 = 942/252 - 942/252 simplified gives 157/42
- So, 72/28 + 21/18 = 157/42
In mixed form: 331/42
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