Add 28/20 and 90/36
1st number: 1 8/20, 2nd number: 2 18/36
28/20 + 90/36 is 39/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
28/20 = 28 × 9/20 × 9 = 252/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
90/36 = 90 × 5/36 × 5 = 450/180 - Add the two like fractions:
252/180 + 450/180 = 252 + 450/180 = 702/180 - 702/180 simplified gives 39/10
- So, 28/20 + 90/36 = 39/10
In mixed form: 39/10
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