Add 3/70 and 15/90
3/70 + 15/90 is 22/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
3/70 = 3 × 9/70 × 9 = 27/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630 - Add the two like fractions:
27/630 + 105/630 = 27 + 105/630 = 132/630 - 132/630 simplified gives 22/105
- So, 3/70 + 15/90 = 22/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70+15/90 3/70+30/90 9/70+15/90 3/70+45/90 15/70+15/90 3/70+75/90 21/70+15/90