Add 90/70 and 35/64
1st number: 1 20/70, 2nd number: 35/64
90/70 + 35/64 is 821/448.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 64 is 2240
Next, find the equivalent fraction of both fractional numbers with denominator 2240 - For the 1st fraction, since 70 × 32 = 2240,
90/70 = 90 × 32/70 × 32 = 2880/2240 - Likewise, for the 2nd fraction, since 64 × 35 = 2240,
35/64 = 35 × 35/64 × 35 = 1225/2240 - Add the two like fractions:
2880/2240 + 1225/2240 = 2880 + 1225/2240 = 4105/2240 - 4105/2240 simplified gives 821/448
- So, 90/70 + 35/64 = 821/448
In mixed form: 1373/448
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+70/64