Add 21/20 and 12/27
1st number: 1 1/20, 2nd number: 12/27
21/20 + 12/27 is 269/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
21/20 = 21 × 27/20 × 27 = 567/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
12/27 = 12 × 20/27 × 20 = 240/540 - Add the two like fractions:
567/540 + 240/540 = 567 + 240/540 = 807/540 - 807/540 simplified gives 269/180
- So, 21/20 + 12/27 = 269/180
In mixed form: 189/180
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