Add 80/30 and 60/40
1st number: 2 20/30, 2nd number: 1 20/40
80/30 + 60/40 is 25/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
80/30 = 80 × 4/30 × 4 = 320/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
60/40 = 60 × 3/40 × 3 = 180/120 - Add the two like fractions:
320/120 + 180/120 = 320 + 180/120 = 500/120 - 500/120 simplified gives 25/6
- So, 80/30 + 60/40 = 25/6
In mixed form: 41/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60+60/40 80/30+60/80 80/90+60/40