Add 21/2 and 42/45
1st number: 10 1/2, 2nd number: 42/45
21/2 + 42/45 is 343/30.
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,
42/45 = 42 × 2/45 × 2 = 84/90 - Add the two like fractions:
945/90 + 84/90 = 945 + 84/90 = 1029/90 - 1029/90 simplified gives 343/30
- So, 21/2 + 42/45 = 343/30
In mixed form: 1113/30
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