Add 18/5 and 72/20
1st number: 3 3/5, 2nd number: 3 12/20
18/5 + 72/20 is 36/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
18/5 = 18 × 4/5 × 4 = 72/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Add the two like fractions:
72/20 + 72/20 = 72 + 72/20 = 144/20 - 144/20 simplified gives 36/5
- So, 18/5 + 72/20 = 36/5
In mixed form: 71/5
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