Add 7/20 and 90/9
1st number: 7/20, 2nd number: 10 0/9
7/20 + 90/9 is 207/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 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 9 × 20 = 180,
90/9 = 90 × 20/9 × 20 = 1800/180 - Add the two like fractions:
63/180 + 1800/180 = 63 + 1800/180 = 1863/180 - 1863/180 simplified gives 207/20
- So, 7/20 + 90/9 = 207/20
In mixed form: 107/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20+90/9 7/40+90/9 7/20+90/18 21/20+90/9 7/60+90/9 7/20+90/27 35/20+90/9 7/20+90/45 49/20+90/9 7/20+90/63