Add 8/18 and 5/8
8/18 + 5/8 is 77/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
8/18 = 8 × 4/18 × 4 = 32/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
5/8 = 5 × 9/8 × 9 = 45/72 - Add the two like fractions:
32/72 + 45/72 = 32 + 45/72 = 77/72 - So, 8/18 + 5/8 = 77/72
In mixed form: 15/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18+5/8 8/18+10/8 8/36+5/8 8/18+5/16 24/18+5/8 8/18+15/8 8/54+5/8 8/18+5/24 40/18+5/8 8/18+25/8 8/90+5/8 8/18+5/40 56/18+5/8 8/18+35/8 8/18+5/56