Add 72/16 and 80/20
1st number: 4 8/16, 2nd number: 4 0/20
72/16 + 80/20 is 17/2.
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,
80/20 = 80 × 4/20 × 4 = 320/80 - Add the two like fractions:
360/80 + 320/80 = 360 + 320/80 = 680/80 - 680/80 simplified gives 17/2
- So, 72/16 + 80/20 = 17/2
In mixed form: 81/2
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