Add 30/54 and 20/90
30/54 + 20/90 is 7/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
30/54 = 30 × 5/54 × 5 = 150/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
20/90 = 20 × 3/90 × 3 = 60/270 - Add the two like fractions:
150/270 + 60/270 = 150 + 60/270 = 210/270 - 210/270 simplified gives 7/9
- So, 30/54 + 20/90 = 7/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/54+20/90 30/54+40/90 90/54+20/90 30/54+60/90