Add 70/90 and 7/14
70/90 + 7/14 is 23/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 14 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
70/90 = 70 × 7/90 × 7 = 490/630 - Likewise, for the 2nd fraction, since 14 × 45 = 630,
7/14 = 7 × 45/14 × 45 = 315/630 - Add the two like fractions:
490/630 + 315/630 = 490 + 315/630 = 805/630 - 805/630 simplified gives 23/18
- So, 70/90 + 7/14 = 23/18
In mixed form: 15/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90+7/28 70/90+21/14 70/90+7/42 70/90+35/14 70/90+7/70 70/90+49/14 70/90+7/98