Add 42/70 and 21/6
1st number: 42/70, 2nd number: 3 3/6
42/70 + 21/6 is 41/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
42/70 = 42 × 3/70 × 3 = 126/210 - Likewise, for the 2nd fraction, since 6 × 35 = 210,
21/6 = 21 × 35/6 × 35 = 735/210 - Add the two like fractions:
126/210 + 735/210 = 126 + 735/210 = 861/210 - 861/210 simplified gives 41/10
- So, 42/70 + 21/6 = 41/10
In mixed form: 41/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+21/6 42/70+42/6 42/70+21/12 42/70+63/6 42/70+21/18 42/70+21/30 42/70+21/42