Add 21/2 and 84/45
1st number: 10 1/2, 2nd number: 1 39/45
21/2 + 84/45 is 371/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 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 45 × 2 = 90,
84/45 = 84 × 2/45 × 2 = 168/90 - Add the two like fractions:
945/90 + 168/90 = 945 + 168/90 = 1113/90 - 1113/90 simplified gives 371/30
- So, 21/2 + 84/45 = 371/30
In mixed form: 1211/30
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