Add 8/42 and 42/56
8/42 + 42/56 is 79/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
8/42 = 8 × 4/42 × 4 = 32/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
42/56 = 42 × 3/56 × 3 = 126/168 - Add the two like fractions:
32/168 + 126/168 = 32 + 126/168 = 158/168 - 158/168 simplified gives 79/84
- So, 8/42 + 42/56 = 79/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/42+42/56 8/42+84/56 8/84+42/56 24/42+42/56 40/42+42/56 56/42+42/56