Add 54/27 and 90/20
1st number: 2 0/27, 2nd number: 4 10/20
54/27 + 90/20 is 13/2.
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,
54/27 = 54 × 20/27 × 20 = 1080/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
90/20 = 90 × 27/20 × 27 = 2430/540 - Add the two like fractions:
1080/540 + 2430/540 = 1080 + 2430/540 = 3510/540 - 3510/540 simplified gives 13/2
- So, 54/27 + 90/20 = 13/2
In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/27+90/40 54/81+90/20 54/27+90/60