Add 75/54 and 30/80
1st number: 1 21/54, 2nd number: 30/80
75/54 + 30/80 is 127/72.
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,
75/54 = 75 × 40/54 × 40 = 3000/2160 - Likewise, for the 2nd fraction, since 80 × 27 = 2160,
30/80 = 30 × 27/80 × 27 = 810/2160 - Add the two like fractions:
3000/2160 + 810/2160 = 3000 + 810/2160 = 3810/2160 - 3810/2160 simplified gives 127/72
- So, 75/54 + 30/80 = 127/72
In mixed form: 155/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/54+60/80 75/54+90/80