Add 21/60 and 42/27
1st number: 21/60, 2nd number: 1 15/27
21/60 + 42/27 is 343/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 60 × 9 = 540,
21/60 = 21 × 9/60 × 9 = 189/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
42/27 = 42 × 20/27 × 20 = 840/540 - Add the two like fractions:
189/540 + 840/540 = 189 + 840/540 = 1029/540 - 1029/540 simplified gives 343/180
- So, 21/60 + 42/27 = 343/180
In mixed form: 1163/180
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