Add 18/15 and 72/60
1st number: 1 3/15, 2nd number: 1 12/60
18/15 + 72/60 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 60 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 60 × 1 = 60,
72/60 = 72 × 1/60 × 1 = 72/60 - Add the two like fractions:
72/60 + 72/60 = 72 + 72/60 = 144/60 - 144/60 simplified gives 12/5
- So, 18/15 + 72/60 = 12/5
In mixed form: 22/5
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