Add 5/4 and 30/90
1st number: 1 1/4, 2nd number: 30/90
5/4 + 30/90 is 19/12.
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,
5/4 = 5 × 45/4 × 45 = 225/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
30/90 = 30 × 2/90 × 2 = 60/180 - Add the two like fractions:
225/180 + 60/180 = 225 + 60/180 = 285/180 - 285/180 simplified gives 19/12
- So, 5/4 + 30/90 = 19/12
In mixed form: 17/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4+30/90 5/4+60/90 5/8+30/90 15/4+30/90 5/12+30/90 25/4+30/90 5/20+30/90 35/4+30/90 5/28+30/90