Add 90/20 and 21/54
1st number: 4 10/20, 2nd number: 21/54
90/20 + 21/54 is 44/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
90/20 = 90 × 27/20 × 27 = 2430/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
21/54 = 21 × 10/54 × 10 = 210/540 - Add the two like fractions:
2430/540 + 210/540 = 2430 + 210/540 = 2640/540 - 2640/540 simplified gives 44/9
- So, 90/20 + 21/54 = 44/9
In mixed form: 48/9
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