Add 40/80 and 9/18
40/80 + 9/18 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
40/80 = 40 × 9/80 × 9 = 360/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
9/18 = 9 × 40/18 × 40 = 360/720 - Add the two like fractions:
360/720 + 360/720 = 360 + 360/720 = 720/720 - 720/720 simplified gives 1/1
- So, 40/80 + 9/18 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80+9/36 40/80+27/18 40/80+9/54 40/80+45/18 40/80+9/90 40/80+63/18