Add 9/4 and 40/90
1st number: 2 1/4, 2nd number: 40/90
9/4 + 40/90 is 97/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 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 90 × 2 = 180,
40/90 = 40 × 2/90 × 2 = 80/180 - Add the two like fractions:
405/180 + 80/180 = 405 + 80/180 = 485/180 - 485/180 simplified gives 97/36
- So, 9/4 + 40/90 = 97/36
In mixed form: 225/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4+40/90 9/4+80/90 9/8+40/90 27/4+40/90 9/12+40/90 45/4+40/90 9/20+40/90 63/4+40/90 9/28+40/90