Add 15/80 and 14/70
15/80 + 14/70 is 31/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
15/80 = 15 × 7/80 × 7 = 105/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
14/70 = 14 × 8/70 × 8 = 112/560 - Add the two like fractions:
105/560 + 112/560 = 105 + 112/560 = 217/560 - 217/560 simplified gives 31/80
- So, 15/80 + 14/70 = 31/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80+14/70 15/80+28/70 45/80+14/70 15/80+42/70 75/80+14/70 15/80+98/70