Add 4/21 and 70/36
1st number: 4/21, 2nd number: 1 34/36
4/21 + 70/36 is 269/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
4/21 = 4 × 12/21 × 12 = 48/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
70/36 = 70 × 7/36 × 7 = 490/252 - Add the two like fractions:
48/252 + 490/252 = 48 + 490/252 = 538/252 - 538/252 simplified gives 269/126
- So, 4/21 + 70/36 = 269/126
In mixed form: 217/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21+70/36 4/42+70/36 4/21+70/72 12/21+70/36 4/63+70/36 20/21+70/36 28/21+70/36