Add 27/42 and 4/70
27/42 + 4/70 is 7/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
27/42 = 27 × 5/42 × 5 = 135/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
4/70 = 4 × 3/70 × 3 = 12/210 - Add the two like fractions:
135/210 + 12/210 = 135 + 12/210 = 147/210 - 147/210 simplified gives 7/10
- So, 27/42 + 4/70 = 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+4/70 27/42+8/70 27/84+4/70 81/42+4/70 27/42+12/70 27/42+20/70 27/42+28/70