Add 70/90 and 20/14
1st number: 70/90, 2nd number: 1 6/14
70/90 + 20/14 is 139/63.
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,
20/14 = 20 × 45/14 × 45 = 900/630 - Add the two like fractions:
490/630 + 900/630 = 490 + 900/630 = 1390/630 - 1390/630 simplified gives 139/63
- So, 70/90 + 20/14 = 139/63
In mixed form: 213/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90+40/14 70/90+20/28 70/90+60/14 70/90+20/42 70/90+20/70 70/90+20/98