Add 6/8 and 90/18
1st number: 6/8, 2nd number: 5 0/18
6/8 + 90/18 is 23/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
6/8 = 6 × 9/8 × 9 = 54/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
90/18 = 90 × 4/18 × 4 = 360/72 - Add the two like fractions:
54/72 + 360/72 = 54 + 360/72 = 414/72 - 414/72 simplified gives 23/4
- So, 6/8 + 90/18 = 23/4
In mixed form: 53/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/8+90/18 6/16+90/18 6/8+90/36 18/8+90/18 6/24+90/18 6/8+90/54 30/8+90/18 6/40+90/18 42/8+90/18 6/56+90/18