Add 90/25 and 60/80
1st number: 3 15/25, 2nd number: 60/80
90/25 + 60/80 is 87/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
90/25 = 90 × 16/25 × 16 = 1440/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
60/80 = 60 × 5/80 × 5 = 300/400 - Add the two like fractions:
1440/400 + 300/400 = 1440 + 300/400 = 1740/400 - 1740/400 simplified gives 87/20
- So, 90/25 + 60/80 = 87/20
In mixed form: 47/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/50+60/80 90/75+60/80