Add 15/42 and 70/7
1st number: 15/42, 2nd number: 10 0/7
15/42 + 70/7 is 145/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
15/42 = 15 × 1/42 × 1 = 15/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
70/7 = 70 × 6/7 × 6 = 420/42 - Add the two like fractions:
15/42 + 420/42 = 15 + 420/42 = 435/42 - 435/42 simplified gives 145/14
- So, 15/42 + 70/7 = 145/14
In mixed form: 105/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+70/7 15/84+70/7 15/42+70/14 45/42+70/7 15/42+70/21 75/42+70/7 15/42+70/35 15/42+70/49