Add 3/7 and 4/90
3/7 + 4/90 is 149/315.
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,
3/7 = 3 × 90/7 × 90 = 270/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
4/90 = 4 × 7/90 × 7 = 28/630 - Add the two like fractions:
270/630 + 28/630 = 270 + 28/630 = 298/630 - 298/630 simplified gives 149/315
- So, 3/7 + 4/90 = 149/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+4/90 3/7+8/90 3/14+4/90 9/7+4/90 3/7+12/90 3/21+4/90 15/7+4/90 3/7+20/90 3/35+4/90 21/7+4/90 3/7+28/90 3/49+4/90