Add 28/35 and 9/21
28/35 + 9/21 is 43/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
28/35 = 28 × 3/35 × 3 = 84/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
9/21 = 9 × 5/21 × 5 = 45/105 - Add the two like fractions:
84/105 + 45/105 = 84 + 45/105 = 129/105 - 129/105 simplified gives 43/35
- So, 28/35 + 9/21 = 43/35
In mixed form: 18/35
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