Add 3/21 and 28/30
3/21 + 28/30 is 113/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
3/21 = 3 × 10/21 × 10 = 30/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Add the two like fractions:
30/210 + 196/210 = 30 + 196/210 = 226/210 - 226/210 simplified gives 113/105
- So, 3/21 + 28/30 = 113/105
In mixed form: 18/105
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