Add 42/49 and 27/30
42/49 + 27/30 is 123/70.
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,
42/49 = 42 × 30/49 × 30 = 1260/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
27/30 = 27 × 49/30 × 49 = 1323/1470 - Add the two like fractions:
1260/1470 + 1323/1470 = 1260 + 1323/1470 = 2583/1470 - 2583/1470 simplified gives 123/70
- So, 42/49 + 27/30 = 123/70
In mixed form: 153/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/49+27/30 42/49+54/30 42/98+27/30 42/49+27/60 42/49+81/30 42/49+27/90