Add 75/50 and 20/90
1st number: 1 25/50, 2nd number: 20/90
75/50 + 20/90 is 31/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
75/50 = 75 × 9/50 × 9 = 675/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
20/90 = 20 × 5/90 × 5 = 100/450 - Add the two like fractions:
675/450 + 100/450 = 675 + 100/450 = 775/450 - 775/450 simplified gives 31/18
- So, 75/50 + 20/90 = 31/18
In mixed form: 113/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/50+40/90 75/50+60/90