Add 10/35 and 8/42
10/35 + 8/42 is 10/21.
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,
10/35 = 10 × 6/35 × 6 = 60/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
8/42 = 8 × 5/42 × 5 = 40/210 - Add the two like fractions:
60/210 + 40/210 = 60 + 40/210 = 100/210 - 100/210 simplified gives 10/21
- So, 10/35 + 8/42 = 10/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/35+8/42 10/35+16/42 10/70+8/42 10/35+8/84 30/35+8/42 10/35+24/42 50/35+8/42 10/35+40/42 70/35+8/42 10/35+56/42