Add 18/70 and 8/63
18/70 + 8/63 is 121/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
8/63 = 8 × 10/63 × 10 = 80/630 - Add the two like fractions:
162/630 + 80/630 = 162 + 80/630 = 242/630 - 242/630 simplified gives 121/315
- So, 18/70 + 8/63 = 121/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70+8/63 18/70+16/63 54/70+8/63 18/70+24/63 90/70+8/63 18/70+40/63 18/70+56/63