Add 7/42 and 8/84
7/42 + 8/84 is 11/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
7/42 = 7 × 2/42 × 2 = 14/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
8/84 = 8 × 1/84 × 1 = 8/84 - Add the two like fractions:
14/84 + 8/84 = 14 + 8/84 = 22/84 - 22/84 simplified gives 11/42
- So, 7/42 + 8/84 = 11/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+8/84 7/42+16/84 7/84+8/84 21/42+8/84 7/42+24/84 35/42+8/84 7/42+40/84 49/42+8/84 7/42+56/84