Add 81/70 and 45/36
1st number: 1 11/70, 2nd number: 1 9/36
81/70 + 45/36 is 337/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 36 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 70 × 18 = 1260,
81/70 = 81 × 18/70 × 18 = 1458/1260 - Likewise, for the 2nd fraction, since 36 × 35 = 1260,
45/36 = 45 × 35/36 × 35 = 1575/1260 - Add the two like fractions:
1458/1260 + 1575/1260 = 1458 + 1575/1260 = 3033/1260 - 3033/1260 simplified gives 337/140
- So, 81/70 + 45/36 = 337/140
In mixed form: 257/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/70+90/36 81/70+45/72