Add 72/80 and 9/4
1st number: 72/80, 2nd number: 2 1/4
72/80 + 9/4 is 63/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 4 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
72/80 = 72 × 1/80 × 1 = 72/80 - Likewise, for the 2nd fraction, since 4 × 20 = 80,
9/4 = 9 × 20/4 × 20 = 180/80 - Add the two like fractions:
72/80 + 180/80 = 72 + 180/80 = 252/80 - 252/80 simplified gives 63/20
- So, 72/80 + 9/4 = 63/20
In mixed form: 33/20
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