Add 72/36 and 21/20
1st number: 2 0/36, 2nd number: 1 1/20
72/36 + 21/20 is 61/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
72/36 = 72 × 5/36 × 5 = 360/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
21/20 = 21 × 9/20 × 9 = 189/180 - Add the two like fractions:
360/180 + 189/180 = 360 + 189/180 = 549/180 - 549/180 simplified gives 61/20
- So, 72/36 + 21/20 = 61/20
In mixed form: 31/20
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