Add 90/50 and 20/90
1st number: 1 40/50, 2nd number: 20/90
90/50 + 20/90 is 91/45.
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,
90/50 = 90 × 9/50 × 9 = 810/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
20/90 = 20 × 5/90 × 5 = 100/450 - Add the two like fractions:
810/450 + 100/450 = 810 + 100/450 = 910/450 - 910/450 simplified gives 91/45
- So, 90/50 + 20/90 = 91/45
In mixed form: 21/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/50+40/90 90/50+60/90