Add 18/15 and 12/4
1st number: 1 3/15, 2nd number: 3 0/4
18/15 + 12/4 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 4 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 4 × 15 = 60,
12/4 = 12 × 15/4 × 15 = 180/60 - Add the two like fractions:
72/60 + 180/60 = 72 + 180/60 = 252/60 - 252/60 simplified gives 21/5
- So, 18/15 + 12/4 = 21/5
In mixed form: 41/5
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