Add 72/90 and 54/20
1st number: 72/90, 2nd number: 2 14/20
72/90 + 54/20 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
72/90 = 72 × 2/90 × 2 = 144/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
54/20 = 54 × 9/20 × 9 = 486/180 - Add the two like fractions:
144/180 + 486/180 = 144 + 486/180 = 630/180 - 630/180 simplified gives 7/2
- So, 72/90 + 54/20 = 7/2
In mixed form: 31/2
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