Add 28/21 and 90/56
1st number: 1 7/21, 2nd number: 1 34/56
28/21 + 90/56 is 247/84.
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,
28/21 = 28 × 8/21 × 8 = 224/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
90/56 = 90 × 3/56 × 3 = 270/168 - Add the two like fractions:
224/168 + 270/168 = 224 + 270/168 = 494/168 - 494/168 simplified gives 247/84
- So, 28/21 + 90/56 = 247/84
In mixed form: 279/84
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