Add 21/18 and 3/30
1st number: 1 3/18, 2nd number: 3/30
21/18 + 3/30 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
3/30 = 3 × 3/30 × 3 = 9/90 - Add the two like fractions:
105/90 + 9/90 = 105 + 9/90 = 114/90 - 114/90 simplified gives 19/15
- So, 21/18 + 3/30 = 19/15
In mixed form: 14/15
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