Add 49/21 and 84/18
1st number: 2 7/21, 2nd number: 4 12/18
49/21 + 84/18 is 7/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
49/21 = 49 × 6/21 × 6 = 294/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
84/18 = 84 × 7/18 × 7 = 588/126 - Add the two like fractions:
294/126 + 588/126 = 294 + 588/126 = 882/126 - 882/126 simplified gives 7/1
- So, 49/21 + 84/18 = 7/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21+84/18 49/42+84/18 49/21+84/36 49/63+84/18 49/21+84/54 49/21+84/90