Add 90/40 and 10/80
1st number: 2 10/40, 2nd number: 10/80
90/40 + 10/80 is 19/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
90/40 = 90 × 2/40 × 2 = 180/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
10/80 = 10 × 1/80 × 1 = 10/80 - Add the two like fractions:
180/80 + 10/80 = 180 + 10/80 = 190/80 - 190/80 simplified gives 19/8
- So, 90/40 + 10/80 = 19/8
In mixed form: 23/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+20/80 90/80+10/80 90/40+30/80 90/40+50/80 90/40+70/80