Add 40/7 and 42/30
1st number: 5 5/7, 2nd number: 1 12/30
40/7 + 42/30 is 249/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
40/7 = 40 × 30/7 × 30 = 1200/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210 - Add the two like fractions:
1200/210 + 294/210 = 1200 + 294/210 = 1494/210 - 1494/210 simplified gives 249/35
- So, 40/7 + 42/30 = 249/35
In mixed form: 74/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+42/30 40/7+84/30 40/14+42/30 40/7+42/60 40/21+42/30 40/7+42/90 40/35+42/30 40/49+42/30