Add 28/90 and 21/4
1st number: 28/90, 2nd number: 5 1/4
28/90 + 21/4 is 1001/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
28/90 = 28 × 2/90 × 2 = 56/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
21/4 = 21 × 45/4 × 45 = 945/180 - Add the two like fractions:
56/180 + 945/180 = 56 + 945/180 = 1001/180 - So, 28/90 + 21/4 = 1001/180
In mixed form: 5101/180
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