Add 7/90 and 6/42
7/90 + 6/42 is 139/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
7/90 = 7 × 7/90 × 7 = 49/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
6/42 = 6 × 15/42 × 15 = 90/630 - Add the two like fractions:
49/630 + 90/630 = 49 + 90/630 = 139/630 - So, 7/90 + 6/42 = 139/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/90+6/42 7/90+12/42 7/90+6/84 21/90+6/42 7/90+18/42 35/90+6/42 7/90+30/42 49/90+6/42