Add 42/18 and 20/15
1st number: 2 6/18, 2nd number: 1 5/15
42/18 + 20/15 is 11/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
42/18 = 42 × 5/18 × 5 = 210/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
20/15 = 20 × 6/15 × 6 = 120/90 - Add the two like fractions:
210/90 + 120/90 = 210 + 120/90 = 330/90 - 330/90 simplified gives 11/3
- So, 42/18 + 20/15 = 11/3
In mixed form: 32/3
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