Add 21/30 and 30/18
1st number: 21/30, 2nd number: 1 12/18
21/30 + 30/18 is 71/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
21/30 = 21 × 3/30 × 3 = 63/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Add the two like fractions:
63/90 + 150/90 = 63 + 150/90 = 213/90 - 213/90 simplified gives 71/30
- So, 21/30 + 30/18 = 71/30
In mixed form: 211/30
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