Add 21/27 and 42/20
1st number: 21/27, 2nd number: 2 2/20
21/27 + 42/20 is 259/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
21/27 = 21 × 20/27 × 20 = 420/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
42/20 = 42 × 27/20 × 27 = 1134/540 - Add the two like fractions:
420/540 + 1134/540 = 420 + 1134/540 = 1554/540 - 1554/540 simplified gives 259/90
- So, 21/27 + 42/20 = 259/90
In mixed form: 279/90
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