Add 7/49 and 20/30
7/49 + 20/30 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 49 × 30 = 1470,
7/49 = 7 × 30/49 × 30 = 210/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
20/30 = 20 × 49/30 × 49 = 980/1470 - Add the two like fractions:
210/1470 + 980/1470 = 210 + 980/1470 = 1190/1470 - 1190/1470 simplified gives 17/21
- So, 7/49 + 20/30 = 17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/49+20/30 7/49+40/30 7/98+20/30 7/49+20/60 21/49+20/30 7/49+60/30 7/49+20/90 35/49+20/30