Add 40/42 and 8/10
40/42 + 8/10 is 184/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
40/42 = 40 × 5/42 × 5 = 200/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
8/10 = 8 × 21/10 × 21 = 168/210 - Add the two like fractions:
200/210 + 168/210 = 200 + 168/210 = 368/210 - 368/210 simplified gives 184/105
- So, 40/42 + 8/10 = 184/105
In mixed form: 179/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42+8/10 40/42+16/10 40/84+8/10 40/42+8/20 40/42+24/10 40/42+8/30 40/42+40/10 40/42+8/50 40/42+56/10 40/42+8/70