Add 90/20 and 84/80
1st number: 4 10/20, 2nd number: 1 4/80
90/20 + 84/80 is 111/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
90/20 = 90 × 4/20 × 4 = 360/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
84/80 = 84 × 1/80 × 1 = 84/80 - Add the two like fractions:
360/80 + 84/80 = 360 + 84/80 = 444/80 - 444/80 simplified gives 111/20
- So, 90/20 + 84/80 = 111/20
In mixed form: 511/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+84/80 90/60+84/80