Add 90/4 and 80/20
1st number: 22 2/4, 2nd number: 4 0/20
90/4 + 80/20 is 53/2.
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,
80/20 = 80 × 1/20 × 1 = 80/20 - Add the two like fractions:
450/20 + 80/20 = 450 + 80/20 = 530/20 - 530/20 simplified gives 53/2
- So, 90/4 + 80/20 = 53/2
In mixed form: 261/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8+80/20 90/4+80/40 90/12+80/20 90/4+80/60 90/20+80/20 90/28+80/20