Add 12/54 and 18/20
12/54 + 18/20 is 101/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
12/54 = 12 × 10/54 × 10 = 120/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
18/20 = 18 × 27/20 × 27 = 486/540 - Add the two like fractions:
120/540 + 486/540 = 120 + 486/540 = 606/540 - 606/540 simplified gives 101/90
- So, 12/54 + 18/20 = 101/90
In mixed form: 111/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/54+18/20 12/54+36/20 12/54+18/40 36/54+18/20 12/54+54/20 12/54+18/60 60/54+18/20 12/54+90/20 84/54+18/20