Add 50/42 and 70/15
1st number: 1 8/42, 2nd number: 4 10/15
50/42 + 70/15 is 41/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
50/42 = 50 × 5/42 × 5 = 250/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
70/15 = 70 × 14/15 × 14 = 980/210 - Add the two like fractions:
250/210 + 980/210 = 250 + 980/210 = 1230/210 - 1230/210 simplified gives 41/7
- So, 50/42 + 70/15 = 41/7
In mixed form: 56/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/84+70/15 50/42+70/30 50/42+70/45 50/42+70/75