Add 81/72 and 14/70
1st number: 1 9/72, 2nd number: 14/70
81/72 + 14/70 is 53/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
81/72 = 81 × 35/72 × 35 = 2835/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
14/70 = 14 × 36/70 × 36 = 504/2520 - Add the two like fractions:
2835/2520 + 504/2520 = 2835 + 504/2520 = 3339/2520 - 3339/2520 simplified gives 53/40
- So, 81/72 + 14/70 = 53/40
In mixed form: 113/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/72+28/70 81/72+42/70 81/72+98/70