Add 80/40 and 98/30
1st number: 2 0/40, 2nd number: 3 8/30
80/40 + 98/30 is 79/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
80/40 = 80 × 3/40 × 3 = 240/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
98/30 = 98 × 4/30 × 4 = 392/120 - Add the two like fractions:
240/120 + 392/120 = 240 + 392/120 = 632/120 - 632/120 simplified gives 79/15
- So, 80/40 + 98/30 = 79/15
In mixed form: 54/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/40+98/60 80/40+98/90