Add 4/5 and 8/90
4/5 + 8/90 is 8/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
4/5 = 4 × 18/5 × 18 = 72/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
8/90 = 8 × 1/90 × 1 = 8/90 - Add the two like fractions:
72/90 + 8/90 = 72 + 8/90 = 80/90 - 80/90 simplified gives 8/9
- So, 4/5 + 8/90 = 8/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5+8/90 4/5+16/90 4/10+8/90 12/5+8/90 4/5+24/90 4/15+8/90 20/5+8/90 4/5+40/90 4/25+8/90 28/5+8/90 4/5+56/90 4/35+8/90