Add 20/9 and 90/7
1st number: 2 2/9, 2nd number: 12 6/7
20/9 + 90/7 is 950/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
20/9 = 20 × 7/9 × 7 = 140/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
90/7 = 90 × 9/7 × 9 = 810/63 - Add the two like fractions:
140/63 + 810/63 = 140 + 810/63 = 950/63 - So, 20/9 + 90/7 = 950/63
In mixed form: 155/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9+90/7 20/18+90/7 20/9+90/14 60/9+90/7 20/27+90/7 20/9+90/21 20/45+90/7 20/9+90/35 20/63+90/7 20/9+90/49