Add 45/80 and 25/54
45/80 + 25/54 is 443/432.
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,
45/80 = 45 × 27/80 × 27 = 1215/2160 - Likewise, for the 2nd fraction, since 54 × 40 = 2160,
25/54 = 25 × 40/54 × 40 = 1000/2160 - Add the two like fractions:
1215/2160 + 1000/2160 = 1215 + 1000/2160 = 2215/2160 - 2215/2160 simplified gives 443/432
- So, 45/80 + 25/54 = 443/432
In mixed form: 111/432
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+25/54 45/80+50/54 45/80+75/54