Add 12/90 and 12/7
1st number: 12/90, 2nd number: 1 5/7
12/90 + 12/7 is 194/105.
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,
12/90 = 12 × 7/90 × 7 = 84/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
12/7 = 12 × 90/7 × 90 = 1080/630 - Add the two like fractions:
84/630 + 1080/630 = 84 + 1080/630 = 1164/630 - 1164/630 simplified gives 194/105
- So, 12/90 + 12/7 = 194/105
In mixed form: 189/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90+12/7 12/90+24/7 12/90+12/14 36/90+12/7 12/90+36/7 12/90+12/21 60/90+12/7 12/90+60/7 12/90+12/35 84/90+12/7 12/90+84/7 12/90+12/49