Add 21/27 and 90/20
1st number: 21/27, 2nd number: 4 10/20
21/27 + 90/20 is 95/18.
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,
90/20 = 90 × 27/20 × 27 = 2430/540 - Add the two like fractions:
420/540 + 2430/540 = 420 + 2430/540 = 2850/540 - 2850/540 simplified gives 95/18
- So, 21/27 + 90/20 = 95/18
In mixed form: 55/18
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