Add 5/7 and 18/90
5/7 + 18/90 is 32/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
5/7 = 5 × 90/7 × 90 = 450/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630 - Add the two like fractions:
450/630 + 126/630 = 450 + 126/630 = 576/630 - 576/630 simplified gives 32/35
- So, 5/7 + 18/90 = 32/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7+18/90 5/7+36/90 5/14+18/90 15/7+18/90 5/7+54/90 5/21+18/90 25/7+18/90 5/35+18/90 35/7+18/90 5/49+18/90