Add 54/80 and 25/20
1st number: 54/80, 2nd number: 1 5/20
54/80 + 25/20 is 77/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
54/80 = 54 × 1/80 × 1 = 54/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
25/20 = 25 × 4/20 × 4 = 100/80 - Add the two like fractions:
54/80 + 100/80 = 54 + 100/80 = 154/80 - 154/80 simplified gives 77/40
- So, 54/80 + 25/20 = 77/40
In mixed form: 137/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/80+50/20 54/80+25/40 54/80+75/20 54/80+25/60