Add 18/12 and 42/84
1st number: 1 6/12, 2nd number: 42/84
18/12 + 42/84 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
18/12 = 18 × 7/12 × 7 = 126/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
42/84 = 42 × 1/84 × 1 = 42/84 - Add the two like fractions:
126/84 + 42/84 = 126 + 42/84 = 168/84 - 168/84 simplified gives 2/1
- So, 18/12 + 42/84 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+42/84 18/24+42/84 54/12+42/84 18/36+42/84 90/12+42/84 18/60+42/84 18/84+42/84