Add 20/42 and 8/35
20/42 + 8/35 is 74/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
8/35 = 8 × 6/35 × 6 = 48/210 - Add the two like fractions:
100/210 + 48/210 = 100 + 48/210 = 148/210 - 148/210 simplified gives 74/105
- So, 20/42 + 8/35 = 74/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42+8/35 20/42+16/35 20/84+8/35 20/42+8/70 60/42+8/35 20/42+24/35 20/42+40/35 20/42+56/35