Add 21/2 and 72/45
1st number: 10 1/2, 2nd number: 1 27/45
21/2 + 72/45 is 121/10.
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,
72/45 = 72 × 2/45 × 2 = 144/90 - Add the two like fractions:
945/90 + 144/90 = 945 + 144/90 = 1089/90 - 1089/90 simplified gives 121/10
- So, 21/2 + 72/45 = 121/10
In mixed form: 121/10
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