Add 4/7 and 9/90
4/7 + 9/90 is 47/70.
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,
4/7 = 4 × 90/7 × 90 = 360/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
9/90 = 9 × 7/90 × 7 = 63/630 - Add the two like fractions:
360/630 + 63/630 = 360 + 63/630 = 423/630 - 423/630 simplified gives 47/70
- So, 4/7 + 9/90 = 47/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7+9/90 4/7+18/90 4/14+9/90 12/7+9/90 4/7+27/90 4/21+9/90 20/7+9/90 4/7+45/90 4/35+9/90 28/7+9/90 4/7+63/90 4/49+9/90