Add 40/54 and 45/90
40/54 + 45/90 is 67/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
40/54 = 40 × 5/54 × 5 = 200/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
45/90 = 45 × 3/90 × 3 = 135/270 - Add the two like fractions:
200/270 + 135/270 = 200 + 135/270 = 335/270 - 335/270 simplified gives 67/54
- So, 40/54 + 45/90 = 67/54
In mixed form: 113/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/54+45/90