Add 18/40 and 81/30
1st number: 18/40, 2nd number: 2 21/30
18/40 + 81/30 is 63/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
18/40 = 18 × 3/40 × 3 = 54/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
81/30 = 81 × 4/30 × 4 = 324/120 - Add the two like fractions:
54/120 + 324/120 = 54 + 324/120 = 378/120 - 378/120 simplified gives 63/20
- So, 18/40 + 81/30 = 63/20
In mixed form: 33/20
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