Add 90/4 and 7/20
1st number: 22 2/4, 2nd number: 7/20
90/4 + 7/20 is 457/20.
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,
90/4 = 90 × 5/4 × 5 = 450/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
7/20 = 7 × 1/20 × 1 = 7/20 - Add the two like fractions:
450/20 + 7/20 = 450 + 7/20 = 457/20 - So, 90/4 + 7/20 = 457/20
In mixed form: 2217/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4+14/20 90/8+7/20 90/4+7/40 90/4+21/20 90/12+7/20 90/4+7/60 90/4+35/20 90/20+7/20 90/4+49/20 90/28+7/20