Add 8/20 and 8/90
8/20 + 8/90 is 22/45.
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,
8/20 = 8 × 9/20 × 9 = 72/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
8/90 = 8 × 2/90 × 2 = 16/180 - Add the two like fractions:
72/180 + 16/180 = 72 + 16/180 = 88/180 - 88/180 simplified gives 22/45
- So, 8/20 + 8/90 = 22/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20+8/90 8/20+16/90 8/40+8/90 24/20+8/90 8/20+24/90 8/60+8/90 40/20+8/90 8/20+40/90 56/20+8/90 8/20+56/90