Add 90/4 and 42/90
1st number: 22 2/4, 2nd number: 42/90
90/4 + 42/90 is 689/30.
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,
90/4 = 90 × 45/4 × 45 = 4050/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Add the two like fractions:
4050/180 + 84/180 = 4050 + 84/180 = 4134/180 - 4134/180 simplified gives 689/30
- So, 90/4 + 42/90 = 689/30
In mixed form: 2229/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4+84/90 90/8+42/90 90/12+42/90 90/20+42/90 90/28+42/90