Add 21/18 and 40/30
1st number: 1 3/18, 2nd number: 1 10/30
21/18 + 40/30 is 5/2.
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,
40/30 = 40 × 3/30 × 3 = 120/90 - Add the two like fractions:
105/90 + 120/90 = 105 + 120/90 = 225/90 - 225/90 simplified gives 5/2
- So, 21/18 + 40/30 = 5/2
In mixed form: 21/2
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