Add 12/7 and 3/90
1st number: 1 5/7, 2nd number: 3/90
12/7 + 3/90 is 367/210.
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,
12/7 = 12 × 90/7 × 90 = 1080/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
3/90 = 3 × 7/90 × 7 = 21/630 - Add the two like fractions:
1080/630 + 21/630 = 1080 + 21/630 = 1101/630 - 1101/630 simplified gives 367/210
- So, 12/7 + 3/90 = 367/210
In mixed form: 1157/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/7+3/90 12/7+6/90 12/14+3/90 36/7+3/90 12/7+9/90 12/21+3/90 60/7+3/90 12/7+15/90 12/35+3/90 84/7+3/90 12/7+21/90 12/49+3/90