Add 20/35 and 4/42
20/35 + 4/42 is 2/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
20/35 = 20 × 6/35 × 6 = 120/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
4/42 = 4 × 5/42 × 5 = 20/210 - Add the two like fractions:
120/210 + 20/210 = 120 + 20/210 = 140/210 - 140/210 simplified gives 2/3
- So, 20/35 + 4/42 = 2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/35+4/42 20/35+8/42 20/70+4/42 20/35+4/84 60/35+4/42 20/35+12/42 20/35+20/42 20/35+28/42