Add 40/50 and 21/18
1st number: 40/50, 2nd number: 1 3/18
40/50 + 21/18 is 59/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
40/50 = 40 × 9/50 × 9 = 360/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450 - Add the two like fractions:
360/450 + 525/450 = 360 + 525/450 = 885/450 - 885/450 simplified gives 59/30
- So, 40/50 + 21/18 = 59/30
In mixed form: 129/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/50+21/18 40/50+42/18 40/50+21/36 40/50+63/18 40/50+21/54 40/50+21/90