Add 90/20 and 10/80
1st number: 4 10/20, 2nd number: 10/80
90/20 + 10/80 is 37/8.
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,
10/80 = 10 × 1/80 × 1 = 10/80 - Add the two like fractions:
360/80 + 10/80 = 360 + 10/80 = 370/80 - 370/80 simplified gives 37/8
- So, 90/20 + 10/80 = 37/8
In mixed form: 45/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+20/80 90/40+10/80 90/20+30/80 90/60+10/80 90/20+50/80 90/20+70/80