Add 10/20 and 8/90
10/20 + 8/90 is 53/90.
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,
10/20 = 10 × 9/20 × 9 = 90/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
8/90 = 8 × 2/90 × 2 = 16/180 - Add the two like fractions:
90/180 + 16/180 = 90 + 16/180 = 106/180 - 106/180 simplified gives 53/90
- So, 10/20 + 8/90 = 53/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20+16/90 10/40+8/90 30/20+8/90 10/20+24/90 10/60+8/90 50/20+8/90 10/20+40/90 70/20+8/90 10/20+56/90