Add 18/7 and 90/9
1st number: 2 4/7, 2nd number: 10 0/9
18/7 + 90/9 is 88/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
18/7 = 18 × 9/7 × 9 = 162/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
90/9 = 90 × 7/9 × 7 = 630/63 - Add the two like fractions:
162/63 + 630/63 = 162 + 630/63 = 792/63 - 792/63 simplified gives 88/7
- So, 18/7 + 90/9 = 88/7
In mixed form: 124/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7+90/9 18/14+90/9 18/7+90/18 54/7+90/9 18/21+90/9 18/7+90/27 90/7+90/9 18/35+90/9 18/7+90/45 18/49+90/9 18/7+90/63