Add 42/21 and 12/49
1st number: 2 0/21, 2nd number: 12/49
42/21 + 12/49 is 110/49.
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,
42/21 = 42 × 7/21 × 7 = 294/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
12/49 = 12 × 3/49 × 3 = 36/147 - Add the two like fractions:
294/147 + 36/147 = 294 + 36/147 = 330/147 - 330/147 simplified gives 110/49
- So, 42/21 + 12/49 = 110/49
In mixed form: 212/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+12/49 42/21+24/49 42/21+12/98 42/21+36/49 42/63+12/49 42/21+60/49 42/21+84/49