Add 2/7 and 20/90
2/7 + 20/90 is 32/63.
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,
2/7 = 2 × 90/7 × 90 = 180/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Add the two like fractions:
180/630 + 140/630 = 180 + 140/630 = 320/630 - 320/630 simplified gives 32/63
- So, 2/7 + 20/90 = 32/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/7+20/90 2/7+40/90 2/14+20/90 6/7+20/90 2/7+60/90 2/21+20/90 10/7+20/90 2/35+20/90 14/7+20/90 2/49+20/90