Add 50/45 and 90/20
1st number: 1 5/45, 2nd number: 4 10/20
50/45 + 90/20 is 101/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
50/45 = 50 × 4/45 × 4 = 200/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
90/20 = 90 × 9/20 × 9 = 810/180 - Add the two like fractions:
200/180 + 810/180 = 200 + 810/180 = 1010/180 - 1010/180 simplified gives 101/18
- So, 50/45 + 90/20 = 101/18
In mixed form: 511/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90+90/20 50/45+90/40 50/45+90/60