Add 28/4 and 21/90
1st number: 7 0/4, 2nd number: 21/90
28/4 + 21/90 is 217/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
28/4 = 28 × 45/4 × 45 = 1260/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Add the two like fractions:
1260/180 + 42/180 = 1260 + 42/180 = 1302/180 - 1302/180 simplified gives 217/30
- So, 28/4 + 21/90 = 217/30
In mixed form: 77/30
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