Add 12/42 and 70/7
1st number: 12/42, 2nd number: 10 0/7
12/42 + 70/7 is 72/7.
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,
12/42 = 12 × 1/42 × 1 = 12/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
70/7 = 70 × 6/7 × 6 = 420/42 - Add the two like fractions:
12/42 + 420/42 = 12 + 420/42 = 432/42 - 432/42 simplified gives 72/7
- So, 12/42 + 70/7 = 72/7
In mixed form: 102/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42+70/7 12/84+70/7 12/42+70/14 36/42+70/7 12/42+70/21 60/42+70/7 12/42+70/35 84/42+70/7 12/42+70/49