Add 40/8 and 45/18
1st number: 5 0/8, 2nd number: 2 9/18
40/8 + 45/18 is 15/2.
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,
40/8 = 40 × 9/8 × 9 = 360/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
45/18 = 45 × 4/18 × 4 = 180/72 - Add the two like fractions:
360/72 + 180/72 = 360 + 180/72 = 540/72 - 540/72 simplified gives 15/2
- So, 40/8 + 45/18 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/8+45/18 40/8+90/18 40/16+45/18 40/8+45/36 40/24+45/18 40/8+45/54 40/8+45/90 40/56+45/18