Add 18/7 and 8/90
1st number: 2 4/7, 2nd number: 8/90
18/7 + 8/90 is 838/315.
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,
18/7 = 18 × 90/7 × 90 = 1620/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
8/90 = 8 × 7/90 × 7 = 56/630 - Add the two like fractions:
1620/630 + 56/630 = 1620 + 56/630 = 1676/630 - 1676/630 simplified gives 838/315
- So, 18/7 + 8/90 = 838/315
In mixed form: 2208/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7+8/90 18/7+16/90 18/14+8/90 54/7+8/90 18/7+24/90 18/21+8/90 90/7+8/90 18/7+40/90 18/35+8/90 18/7+56/90 18/49+8/90