Add 40/7 and 20/90
1st number: 5 5/7, 2nd number: 20/90
40/7 + 20/90 is 374/63.
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,
40/7 = 40 × 90/7 × 90 = 3600/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Add the two like fractions:
3600/630 + 140/630 = 3600 + 140/630 = 3740/630 - 3740/630 simplified gives 374/63
- So, 40/7 + 20/90 = 374/63
In mixed form: 559/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+20/90 40/7+40/90 40/14+20/90 40/7+60/90 40/21+20/90 40/35+20/90 40/49+20/90