Add 90/20 and 81/24
1st number: 4 10/20, 2nd number: 3 9/24
90/20 + 81/24 is 63/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 20 × 6 = 120,
90/20 = 90 × 6/20 × 6 = 540/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
81/24 = 81 × 5/24 × 5 = 405/120 - Add the two like fractions:
540/120 + 405/120 = 540 + 405/120 = 945/120 - 945/120 simplified gives 63/8
- So, 90/20 + 81/24 = 63/8
In mixed form: 77/8
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