Add 20/49 and 18/70
20/49 + 18/70 is 163/245.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
20/49 = 20 × 10/49 × 10 = 200/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
18/70 = 18 × 7/70 × 7 = 126/490 - Add the two like fractions:
200/490 + 126/490 = 200 + 126/490 = 326/490 - 326/490 simplified gives 163/245
- So, 20/49 + 18/70 = 163/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/49+18/70 20/49+36/70 20/98+18/70 60/49+18/70 20/49+54/70 20/49+90/70