Add 72/16 and 15/20
1st number: 4 8/16, 2nd number: 15/20
72/16 + 15/20 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
72/16 = 72 × 5/16 × 5 = 360/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
15/20 = 15 × 4/20 × 4 = 60/80 - Add the two like fractions:
360/80 + 60/80 = 360 + 60/80 = 420/80 - 420/80 simplified gives 21/4
- So, 72/16 + 15/20 = 21/4
In mixed form: 51/4
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