Add 18/12 and 8/42
1st number: 1 6/12, 2nd number: 8/42
18/12 + 8/42 is 71/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 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 42 × 2 = 84,
8/42 = 8 × 2/42 × 2 = 16/84 - Add the two like fractions:
126/84 + 16/84 = 126 + 16/84 = 142/84 - 142/84 simplified gives 71/42
- So, 18/12 + 8/42 = 71/42
In mixed form: 129/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+8/42 18/12+16/42 18/24+8/42 18/12+8/84 54/12+8/42 18/12+24/42 18/36+8/42 90/12+8/42 18/12+40/42 18/60+8/42 18/12+56/42 18/84+8/42