Add 50/42 and 40/30
1st number: 1 8/42, 2nd number: 1 10/30
50/42 + 40/30 is 53/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 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 30 × 7 = 210,
40/30 = 40 × 7/30 × 7 = 280/210 - Add the two like fractions:
250/210 + 280/210 = 250 + 280/210 = 530/210 - 530/210 simplified gives 53/21
- So, 50/42 + 40/30 = 53/21
In mixed form: 211/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42+80/30 50/84+40/30 50/42+40/60 50/42+40/90