Add 7/20 and 90/18
1st number: 7/20, 2nd number: 5 0/18
7/20 + 90/18 is 107/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
7/20 = 7 × 9/20 × 9 = 63/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
90/18 = 90 × 10/18 × 10 = 900/180 - Add the two like fractions:
63/180 + 900/180 = 63 + 900/180 = 963/180 - 963/180 simplified gives 107/20
- So, 7/20 + 90/18 = 107/20
In mixed form: 57/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20+90/18 7/40+90/18 7/20+90/36 21/20+90/18 7/60+90/18 7/20+90/54 35/20+90/18 49/20+90/18