Add 18/15 and 63/20
1st number: 1 3/15, 2nd number: 3 3/20
18/15 + 63/20 is 87/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
18/15 = 18 × 4/15 × 4 = 72/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
63/20 = 63 × 3/20 × 3 = 189/60 - Add the two like fractions:
72/60 + 189/60 = 72 + 189/60 = 261/60 - 261/60 simplified gives 87/20
- So, 18/15 + 63/20 = 87/20
In mixed form: 47/20
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