Add 3/90 and 12/7
1st number: 3/90, 2nd number: 1 5/7
3/90 + 12/7 is 367/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
3/90 = 3 × 7/90 × 7 = 21/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
12/7 = 12 × 90/7 × 90 = 1080/630 - Add the two like fractions:
21/630 + 1080/630 = 21 + 1080/630 = 1101/630 - 1101/630 simplified gives 367/210
- So, 3/90 + 12/7 = 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: 6/90+12/7 3/90+24/7 3/90+12/14 9/90+12/7 3/90+36/7 3/90+12/21 15/90+12/7 3/90+60/7 3/90+12/35 21/90+12/7 3/90+84/7 3/90+12/49