Add 8/7 and 40/90
1st number: 1 1/7, 2nd number: 40/90
8/7 + 40/90 is 100/63.
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,
8/7 = 8 × 90/7 × 90 = 720/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
40/90 = 40 × 7/90 × 7 = 280/630 - Add the two like fractions:
720/630 + 280/630 = 720 + 280/630 = 1000/630 - 1000/630 simplified gives 100/63
- So, 8/7 + 40/90 = 100/63
In mixed form: 137/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/7+40/90 8/7+80/90 8/14+40/90 24/7+40/90 8/21+40/90 40/7+40/90 8/35+40/90 56/7+40/90 8/49+40/90