Add 18/28 and 98/12
1st number: 18/28, 2nd number: 8 2/12
18/28 + 98/12 is 185/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
18/28 = 18 × 3/28 × 3 = 54/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
98/12 = 98 × 7/12 × 7 = 686/84 - Add the two like fractions:
54/84 + 686/84 = 54 + 686/84 = 740/84 - 740/84 simplified gives 185/21
- So, 18/28 + 98/12 = 185/21
In mixed form: 817/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28+98/12 18/56+98/12 18/28+98/24 54/28+98/12 18/84+98/12 18/28+98/36 90/28+98/12 18/28+98/60 18/28+98/84