Add 18/8 and 90/40
1st number: 2 2/8, 2nd number: 2 10/40
18/8 + 90/40 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
18/8 = 18 × 5/8 × 5 = 90/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
90/40 = 90 × 1/40 × 1 = 90/40 - Add the two like fractions:
90/40 + 90/40 = 90 + 90/40 = 180/40 - 180/40 simplified gives 9/2
- So, 18/8 + 90/40 = 9/2
In mixed form: 41/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+90/40 18/16+90/40 18/8+90/80 54/8+90/40 18/24+90/40 90/8+90/40 18/40+90/40 18/56+90/40