Add 3/5 and 90/80
1st number: 3/5, 2nd number: 1 10/80
3/5 + 90/80 is 69/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
3/5 = 3 × 16/5 × 16 = 48/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
90/80 = 90 × 1/80 × 1 = 90/80 - Add the two like fractions:
48/80 + 90/80 = 48 + 90/80 = 138/80 - 138/80 simplified gives 69/40
- So, 3/5 + 90/80 = 69/40
In mixed form: 129/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5+90/80 3/10+90/80 9/5+90/80 3/15+90/80 15/5+90/80 3/25+90/80 21/5+90/80 3/35+90/80