Add 72/20 and 18/80
1st number: 3 12/20, 2nd number: 18/80
72/20 + 18/80 is 153/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
72/20 = 72 × 4/20 × 4 = 288/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80 - Add the two like fractions:
288/80 + 18/80 = 288 + 18/80 = 306/80 - 306/80 simplified gives 153/40
- So, 72/20 + 18/80 = 153/40
In mixed form: 333/40
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