Add 3/42 and 70/10
1st number: 3/42, 2nd number: 7 0/10
3/42 + 70/10 is 99/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
70/10 = 70 × 21/10 × 21 = 1470/210 - Add the two like fractions:
15/210 + 1470/210 = 15 + 1470/210 = 1485/210 - 1485/210 simplified gives 99/14
- So, 3/42 + 70/10 = 99/14
In mixed form: 71/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42+70/10 3/84+70/10 3/42+70/20 9/42+70/10 3/42+70/30 15/42+70/10 3/42+70/50 21/42+70/10