Add 3/8 and 40/42
3/8 + 40/42 is 223/168.
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,
3/8 = 3 × 21/8 × 21 = 63/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
40/42 = 40 × 4/42 × 4 = 160/168 - Add the two like fractions:
63/168 + 160/168 = 63 + 160/168 = 223/168 - So, 3/8 + 40/42 = 223/168
In mixed form: 155/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/8+40/42 3/8+80/42 3/16+40/42 3/8+40/84 9/8+40/42 3/24+40/42 15/8+40/42 3/40+40/42 21/8+40/42 3/56+40/42