Add 18/90 and 14/7
1st number: 18/90, 2nd number: 2 0/7
18/90 + 14/7 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
14/7 = 14 × 90/7 × 90 = 1260/630 - Add the two like fractions:
126/630 + 1260/630 = 126 + 1260/630 = 1386/630 - 1386/630 simplified gives 11/5
- So, 18/90 + 14/7 = 11/5
In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/90+14/7 18/90+28/7 54/90+14/7 18/90+42/7 18/90+14/21 18/90+70/7 18/90+14/35 18/90+98/7 18/90+14/49