Add 1/42 and 40/70
1/42 + 40/70 is 25/42.
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,
1/42 = 1 × 5/42 × 5 = 5/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
40/70 = 40 × 3/70 × 3 = 120/210 - Add the two like fractions:
5/210 + 120/210 = 5 + 120/210 = 125/210 - 125/210 simplified gives 25/42
- So, 1/42 + 40/70 = 25/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42+40/70 1/42+80/70 1/84+40/70 3/42+40/70 5/42+40/70 7/42+40/70