Add 21/18 and 40/12
1st number: 1 3/18, 2nd number: 3 4/12
21/18 + 40/12 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
40/12 = 40 × 3/12 × 3 = 120/36 - Add the two like fractions:
42/36 + 120/36 = 42 + 120/36 = 162/36 - 162/36 simplified gives 9/2
- So, 21/18 + 40/12 = 9/2
In mixed form: 41/2
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