Add 18/12 and 30/40
1st number: 1 6/12, 2nd number: 30/40
18/12 + 30/40 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
18/12 = 18 × 10/12 × 10 = 180/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
30/40 = 30 × 3/40 × 3 = 90/120 - Add the two like fractions:
180/120 + 90/120 = 180 + 90/120 = 270/120 - 270/120 simplified gives 9/4
- So, 18/12 + 30/40 = 9/4
In mixed form: 21/4
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