Add 30/54 and 30/80
30/54 + 30/80 is 67/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 80 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 54 × 40 = 2160,
30/54 = 30 × 40/54 × 40 = 1200/2160 - Likewise, for the 2nd fraction, since 80 × 27 = 2160,
30/80 = 30 × 27/80 × 27 = 810/2160 - Add the two like fractions:
1200/2160 + 810/2160 = 1200 + 810/2160 = 2010/2160 - 2010/2160 simplified gives 67/72
- So, 30/54 + 30/80 = 67/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/54+30/80 30/54+60/80 90/54+30/80 30/54+90/80