Add 81/2 and 21/45
1st number: 40 1/2, 2nd number: 21/45
81/2 + 21/45 is 1229/30.
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,
81/2 = 81 × 45/2 × 45 = 3645/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Add the two like fractions:
3645/90 + 42/90 = 3645 + 42/90 = 3687/90 - 3687/90 simplified gives 1229/30
- So, 81/2 + 21/45 = 1229/30
In mixed form: 4029/30
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