Add 72/21 and 30/56
1st number: 3 9/21, 2nd number: 30/56
72/21 + 30/56 is 111/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
72/21 = 72 × 8/21 × 8 = 576/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
30/56 = 30 × 3/56 × 3 = 90/168 - Add the two like fractions:
576/168 + 90/168 = 576 + 90/168 = 666/168 - 666/168 simplified gives 111/28
- So, 72/21 + 30/56 = 111/28
In mixed form: 327/28
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