Add 40/50 and 21/9
1st number: 40/50, 2nd number: 2 3/9
40/50 + 21/9 is 47/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 9 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 9 × 50 = 450,
21/9 = 21 × 50/9 × 50 = 1050/450 - Add the two like fractions:
360/450 + 1050/450 = 360 + 1050/450 = 1410/450 - 1410/450 simplified gives 47/15
- So, 40/50 + 21/9 = 47/15
In mixed form: 32/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/50+21/9 40/50+42/9 40/50+21/18 40/50+63/9 40/50+21/27 40/50+21/45 40/50+21/63