Add 4/5 and 28/21
1st number: 4/5, 2nd number: 1 7/21
4/5 + 28/21 is 32/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
4/5 = 4 × 21/5 × 21 = 84/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
28/21 = 28 × 5/21 × 5 = 140/105 - Add the two like fractions:
84/105 + 140/105 = 84 + 140/105 = 224/105 - 224/105 simplified gives 32/15
- So, 4/5 + 28/21 = 32/15
In mixed form: 22/15
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