Add 10/90 and 8/20
10/90 + 8/20 is 23/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
10/90 = 10 × 2/90 × 2 = 20/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
8/20 = 8 × 9/20 × 9 = 72/180 - Add the two like fractions:
20/180 + 72/180 = 20 + 72/180 = 92/180 - 92/180 simplified gives 23/45
- So, 10/90 + 8/20 = 23/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/90+8/20 10/90+16/20 10/90+8/40 30/90+8/20 10/90+24/20 10/90+8/60 50/90+8/20 10/90+40/20 70/90+8/20 10/90+56/20