Add 21/36 and 40/15
1st number: 21/36, 2nd number: 2 10/15
21/36 + 40/15 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 15 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Likewise, for the 2nd fraction, since 15 × 12 = 180,
40/15 = 40 × 12/15 × 12 = 480/180 - Add the two like fractions:
105/180 + 480/180 = 105 + 480/180 = 585/180 - 585/180 simplified gives 13/4
- So, 21/36 + 40/15 = 13/4
In mixed form: 31/4
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