Add 72/20 and 45/24
1st number: 3 12/20, 2nd number: 1 21/24
72/20 + 45/24 is 219/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 20 × 6 = 120,
72/20 = 72 × 6/20 × 6 = 432/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
45/24 = 45 × 5/24 × 5 = 225/120 - Add the two like fractions:
432/120 + 225/120 = 432 + 225/120 = 657/120 - 657/120 simplified gives 219/40
- So, 72/20 + 45/24 = 219/40
In mixed form: 519/40
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