Add 72/9 and 18/20
1st number: 8 0/9, 2nd number: 18/20
72/9 + 18/20 is 89/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
72/9 = 72 × 20/9 × 20 = 1440/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
18/20 = 18 × 9/20 × 9 = 162/180 - Add the two like fractions:
1440/180 + 162/180 = 1440 + 162/180 = 1602/180 - 1602/180 simplified gives 89/10
- So, 72/9 + 18/20 = 89/10
In mixed form: 89/10
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