Add 7/4 and 36/21
1st number: 1 3/4, 2nd number: 1 15/21
7/4 + 36/21 is 97/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
7/4 = 7 × 21/4 × 21 = 147/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
36/21 = 36 × 4/21 × 4 = 144/84 - Add the two like fractions:
147/84 + 144/84 = 147 + 144/84 = 291/84 - 291/84 simplified gives 97/28
- So, 7/4 + 36/21 = 97/28
In mixed form: 313/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4+36/21 7/4+72/21 7/8+36/21 7/4+36/42 21/4+36/21 7/12+36/21 7/4+36/63 35/4+36/21 7/20+36/21 49/4+36/21 7/28+36/21