Add 30/54 and 12/20
30/54 + 12/20 is 52/45.
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,
30/54 = 30 × 10/54 × 10 = 300/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
12/20 = 12 × 27/20 × 27 = 324/540 - Add the two like fractions:
300/540 + 324/540 = 300 + 324/540 = 624/540 - 624/540 simplified gives 52/45
- So, 30/54 + 12/20 = 52/45
In mixed form: 17/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/54+12/20 30/54+24/20 30/54+12/40 90/54+12/20 30/54+36/20 30/54+12/60 30/54+60/20 30/54+84/20