Add 20/15 and 18/12
1st number: 1 5/15, 2nd number: 1 6/12
20/15 + 18/12 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
20/15 = 20 × 4/15 × 4 = 80/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
18/12 = 18 × 5/12 × 5 = 90/60 - Add the two like fractions:
80/60 + 90/60 = 80 + 90/60 = 170/60 - 170/60 simplified gives 17/6
- So, 20/15 + 18/12 = 17/6
In mixed form: 25/6
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