Add 20/90 and 70/36
1st number: 20/90, 2nd number: 1 34/36
20/90 + 70/36 is 13/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
70/36 = 70 × 5/36 × 5 = 350/180 - Add the two like fractions:
40/180 + 350/180 = 40 + 350/180 = 390/180 - 390/180 simplified gives 13/6
- So, 20/90 + 70/36 = 13/6
In mixed form: 21/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+70/36 20/90+70/72 60/90+70/36