Add 7/42 and 8/10
7/42 + 8/10 is 29/30.
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,
7/42 = 7 × 5/42 × 5 = 35/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
8/10 = 8 × 21/10 × 21 = 168/210 - Add the two like fractions:
35/210 + 168/210 = 35 + 168/210 = 203/210 - 203/210 simplified gives 29/30
- So, 7/42 + 8/10 = 29/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+8/10 7/42+16/10 7/84+8/10 7/42+8/20 21/42+8/10 7/42+24/10 7/42+8/30 35/42+8/10 7/42+40/10 7/42+8/50 49/42+8/10 7/42+56/10 7/42+8/70