Add 21/30 and 84/56
1st number: 21/30, 2nd number: 1 28/56
21/30 + 84/56 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
21/30 = 21 × 28/30 × 28 = 588/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
84/56 = 84 × 15/56 × 15 = 1260/840 - Add the two like fractions:
588/840 + 1260/840 = 588 + 1260/840 = 1848/840 - 1848/840 simplified gives 11/5
- So, 21/30 + 84/56 = 11/5
In mixed form: 21/5
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