Add 27/20 and 90/72
1st number: 1 7/20, 2nd number: 1 18/72
27/20 + 90/72 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
27/20 = 27 × 18/20 × 18 = 486/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Add the two like fractions:
486/360 + 450/360 = 486 + 450/360 = 936/360 - 936/360 simplified gives 13/5
- So, 27/20 + 90/72 = 13/5
In mixed form: 23/5
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