Add 72/18 and 18/20
1st number: 4 0/18, 2nd number: 18/20
72/18 + 18/20 is 49/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
72/18 = 72 × 10/18 × 10 = 720/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
18/20 = 18 × 9/20 × 9 = 162/180 - Add the two like fractions:
720/180 + 162/180 = 720 + 162/180 = 882/180 - 882/180 simplified gives 49/10
- So, 72/18 + 18/20 = 49/10
In mixed form: 49/10
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