Add 42/54 and 45/20
1st number: 42/54, 2nd number: 2 5/20
42/54 + 45/20 is 109/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
42/54 = 42 × 10/54 × 10 = 420/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
45/20 = 45 × 27/20 × 27 = 1215/540 - Add the two like fractions:
420/540 + 1215/540 = 420 + 1215/540 = 1635/540 - 1635/540 simplified gives 109/36
- So, 42/54 + 45/20 = 109/36
In mixed form: 31/36
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