Add 36/18 and 21/15
1st number: 2 0/18, 2nd number: 1 6/15
36/18 + 21/15 is 17/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
36/18 = 36 × 5/18 × 5 = 180/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
21/15 = 21 × 6/15 × 6 = 126/90 - Add the two like fractions:
180/90 + 126/90 = 180 + 126/90 = 306/90 - 306/90 simplified gives 17/5
- So, 36/18 + 21/15 = 17/5
In mixed form: 32/5
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