Add 28/20 and 63/90
1st number: 1 8/20, 2nd number: 63/90
28/20 + 63/90 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 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 90 × 2 = 180,
63/90 = 63 × 2/90 × 2 = 126/180 - Add the two like fractions:
252/180 + 126/180 = 252 + 126/180 = 378/180 - 378/180 simplified gives 21/10
- So, 28/20 + 63/90 = 21/10
In mixed form: 21/10
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