Add 70/45 and 9/72
1st number: 1 25/45, 2nd number: 9/72
70/45 + 9/72 is 121/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
70/45 = 70 × 8/45 × 8 = 560/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Add the two like fractions:
560/360 + 45/360 = 560 + 45/360 = 605/360 - 605/360 simplified gives 121/72
- So, 70/45 + 9/72 = 121/72
In mixed form: 149/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45+18/72 70/90+9/72 70/45+27/72 70/45+45/72 70/45+63/72