Add 21/2 and 45/90
1st number: 10 1/2, 2nd number: 45/90
21/2 + 45/90 is 11/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
21/2 = 21 × 45/2 × 45 = 945/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
45/90 = 45 × 1/90 × 1 = 45/90 - Add the two like fractions:
945/90 + 45/90 = 945 + 45/90 = 990/90 - 990/90 simplified gives 11/1
- So, 21/2 + 45/90 = 11/1
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