Add 21/10 and 84/56
1st number: 2 1/10, 2nd number: 1 28/56
21/10 + 84/56 is 18/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 10 × 28 = 280,
21/10 = 21 × 28/10 × 28 = 588/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
84/56 = 84 × 5/56 × 5 = 420/280 - Add the two like fractions:
588/280 + 420/280 = 588 + 420/280 = 1008/280 - 1008/280 simplified gives 18/5
- So, 21/10 + 84/56 = 18/5
In mixed form: 33/5
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