Add 8/70 and 7/90
8/70 + 7/90 is 121/630.
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,
8/70 = 8 × 9/70 × 9 = 72/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
7/90 = 7 × 7/90 × 7 = 49/630 - Add the two like fractions:
72/630 + 49/630 = 72 + 49/630 = 121/630 - So, 8/70 + 7/90 = 121/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/70+7/90 8/70+14/90 24/70+7/90 8/70+21/90 40/70+7/90 8/70+35/90 56/70+7/90 8/70+49/90