Add 9/4 and 70/45
1st number: 2 1/4, 2nd number: 1 25/45
9/4 + 70/45 is 137/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
9/4 = 9 × 45/4 × 45 = 405/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
70/45 = 70 × 4/45 × 4 = 280/180 - Add the two like fractions:
405/180 + 280/180 = 405 + 280/180 = 685/180 - 685/180 simplified gives 137/36
- So, 9/4 + 70/45 = 137/36
In mixed form: 329/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4+70/45 9/8+70/45 9/4+70/90 27/4+70/45 9/12+70/45 45/4+70/45 9/20+70/45 63/4+70/45 9/28+70/45