Add 72/56 and 28/21
1st number: 1 16/56, 2nd number: 1 7/21
72/56 + 28/21 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
72/56 = 72 × 3/56 × 3 = 216/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
28/21 = 28 × 8/21 × 8 = 224/168 - Add the two like fractions:
216/168 + 224/168 = 216 + 224/168 = 440/168 - 440/168 simplified gives 55/21
- So, 72/56 + 28/21 = 55/21
In mixed form: 213/21
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