Add 12/90 and 14/7
1st number: 12/90, 2nd number: 2 0/7
12/90 + 14/7 is 32/15.
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,
14/7 = 14 × 90/7 × 90 = 1260/630 - Add the two like fractions:
84/630 + 1260/630 = 84 + 1260/630 = 1344/630 - 1344/630 simplified gives 32/15
- So, 12/90 + 14/7 = 32/15
In mixed form: 22/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90+14/7 12/90+28/7 36/90+14/7 12/90+42/7 12/90+14/21 60/90+14/7 12/90+70/7 12/90+14/35 84/90+14/7 12/90+98/7 12/90+14/49