Add 72/20 and 1/18
1st number: 3 12/20, 2nd number: 1/18
72/20 + 1/18 is 329/90.
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,
1/18 = 1 × 10/18 × 10 = 10/180 - Add the two like fractions:
648/180 + 10/180 = 648 + 10/180 = 658/180 - 658/180 simplified gives 329/90
- So, 72/20 + 1/18 = 329/90
In mixed form: 359/90
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