Add 18/20 and 2/90
18/20 + 2/90 is 83/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
18/20 = 18 × 9/20 × 9 = 162/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
2/90 = 2 × 2/90 × 2 = 4/180 - Add the two like fractions:
162/180 + 4/180 = 162 + 4/180 = 166/180 - 166/180 simplified gives 83/90
- So, 18/20 + 2/90 = 83/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20+2/90 18/20+4/90 18/40+2/90 54/20+2/90 18/20+6/90 18/60+2/90 90/20+2/90 18/20+10/90 18/20+14/90