Add 7/8 and 3/42
7/8 + 3/42 is 53/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
7/8 = 7 × 21/8 × 21 = 147/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
3/42 = 3 × 4/42 × 4 = 12/168 - Add the two like fractions:
147/168 + 12/168 = 147 + 12/168 = 159/168 - 159/168 simplified gives 53/56
- So, 7/8 + 3/42 = 53/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/8+3/42 7/8+6/42 7/16+3/42 7/8+3/84 21/8+3/42 7/8+9/42 7/24+3/42 35/8+3/42 7/8+15/42 7/40+3/42 49/8+3/42 7/8+21/42 7/56+3/42