Add 9/4 and 90/20
1st number: 2 1/4, 2nd number: 4 10/20
9/4 + 90/20 is 27/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
9/4 = 9 × 5/4 × 5 = 45/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Add the two like fractions:
45/20 + 90/20 = 45 + 90/20 = 135/20 - 135/20 simplified gives 27/4
- So, 9/4 + 90/20 = 27/4
In mixed form: 63/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4+90/20 9/8+90/20 9/4+90/40 27/4+90/20 9/12+90/20 9/4+90/60 45/4+90/20 9/20+90/20 63/4+90/20 9/28+90/20