Add 80/21 and 4/49
1st number: 3 17/21, 2nd number: 4/49
80/21 + 4/49 is 572/147.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 49 is 147
Next, find the equivalent fraction of both fractional numbers with denominator 147 - For the 1st fraction, since 21 × 7 = 147,
80/21 = 80 × 7/21 × 7 = 560/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
4/49 = 4 × 3/49 × 3 = 12/147 - Add the two like fractions:
560/147 + 12/147 = 560 + 12/147 = 572/147 - So, 80/21 + 4/49 = 572/147
In mixed form: 3131/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+8/49 80/42+4/49 80/21+4/98 80/21+12/49 80/63+4/49 80/21+20/49 80/21+28/49