Add 72/20 and 15/18
1st number: 3 12/20, 2nd number: 15/18
72/20 + 15/18 is 133/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
72/20 = 72 × 9/20 × 9 = 648/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
15/18 = 15 × 10/18 × 10 = 150/180 - Add the two like fractions:
648/180 + 150/180 = 648 + 150/180 = 798/180 - 798/180 simplified gives 133/30
- So, 72/20 + 15/18 = 133/30
In mixed form: 413/30
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