Add 98/40 and 20/90
1st number: 2 18/40, 2nd number: 20/90
98/40 + 20/90 is 481/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
98/40 = 98 × 9/40 × 9 = 882/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
20/90 = 20 × 4/90 × 4 = 80/360 - Add the two like fractions:
882/360 + 80/360 = 882 + 80/360 = 962/360 - 962/360 simplified gives 481/180
- So, 98/40 + 20/90 = 481/180
In mixed form: 2121/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/40+40/90 98/80+20/90 98/40+60/90