Add 70/64 and 9/90
1st number: 1 6/64, 2nd number: 9/90
70/64 + 9/90 is 191/160.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 90 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 64 × 45 = 2880,
70/64 = 70 × 45/64 × 45 = 3150/2880 - Likewise, for the 2nd fraction, since 90 × 32 = 2880,
9/90 = 9 × 32/90 × 32 = 288/2880 - Add the two like fractions:
3150/2880 + 288/2880 = 3150 + 288/2880 = 3438/2880 - 3438/2880 simplified gives 191/160
- So, 70/64 + 9/90 = 191/160
In mixed form: 131/160
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/64+18/90 70/64+27/90 70/64+45/90 70/64+63/90