Add 18/15 and 45/20
1st number: 1 3/15, 2nd number: 2 5/20
18/15 + 45/20 is 69/20.
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,
45/20 = 45 × 3/20 × 3 = 135/60 - Add the two like fractions:
72/60 + 135/60 = 72 + 135/60 = 207/60 - 207/60 simplified gives 69/20
- So, 18/15 + 45/20 = 69/20
In mixed form: 39/20
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