Add 30/80 and 15/54
30/80 + 15/54 is 47/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 54 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
30/80 = 30 × 27/80 × 27 = 810/2160 - Likewise, for the 2nd fraction, since 54 × 40 = 2160,
15/54 = 15 × 40/54 × 40 = 600/2160 - Add the two like fractions:
810/2160 + 600/2160 = 810 + 600/2160 = 1410/2160 - 1410/2160 simplified gives 47/72
- So, 30/80 + 15/54 = 47/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80+15/54 30/80+30/54 90/80+15/54 30/80+45/54 30/80+75/54