Add 25/30 and 42/49
25/30 + 42/49 is 71/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 49 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 30 × 49 = 1470,
25/30 = 25 × 49/30 × 49 = 1225/1470 - Likewise, for the 2nd fraction, since 49 × 30 = 1470,
42/49 = 42 × 30/49 × 30 = 1260/1470 - Add the two like fractions:
1225/1470 + 1260/1470 = 1225 + 1260/1470 = 2485/1470 - 2485/1470 simplified gives 71/42
- So, 25/30 + 42/49 = 71/42
In mixed form: 129/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30+42/49 25/30+84/49 25/60+42/49 25/30+42/98 75/30+42/49 25/90+42/49