Add 9/42 and 8/12
9/42 + 8/12 is 37/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
9/42 = 9 × 2/42 × 2 = 18/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
8/12 = 8 × 7/12 × 7 = 56/84 - Add the two like fractions:
18/84 + 56/84 = 18 + 56/84 = 74/84 - 74/84 simplified gives 37/42
- So, 9/42 + 8/12 = 37/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+8/12 9/42+16/12 9/84+8/12 9/42+8/24 27/42+8/12 9/42+24/12 9/42+8/36 45/42+8/12 9/42+40/12 9/42+8/60 63/42+8/12 9/42+56/12 9/42+8/84