Add 42/7 and 49/90
1st number: 6 0/7, 2nd number: 49/90
42/7 + 49/90 is 589/90.
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,
42/7 = 42 × 90/7 × 90 = 3780/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
49/90 = 49 × 7/90 × 7 = 343/630 - Add the two like fractions:
3780/630 + 343/630 = 3780 + 343/630 = 4123/630 - 4123/630 simplified gives 589/90
- So, 42/7 + 49/90 = 589/90
In mixed form: 649/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7+49/90 42/7+98/90 42/14+49/90 42/21+49/90 42/35+49/90 42/49+49/90