Add 70/60 and 9/90
1st number: 1 10/60, 2nd number: 9/90
70/60 + 9/90 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
70/60 = 70 × 3/60 × 3 = 210/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
9/90 = 9 × 2/90 × 2 = 18/180 - Add the two like fractions:
210/180 + 18/180 = 210 + 18/180 = 228/180 - 228/180 simplified gives 19/15
- So, 70/60 + 9/90 = 19/15
In mixed form: 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/60+18/90 70/60+27/90 70/60+45/90 70/60+63/90