Add 30/7 and 50/40
1st number: 4 2/7, 2nd number: 1 10/40
30/7 + 50/40 is 155/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
30/7 = 30 × 40/7 × 40 = 1200/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
50/40 = 50 × 7/40 × 7 = 350/280 - Add the two like fractions:
1200/280 + 350/280 = 1200 + 350/280 = 1550/280 - 1550/280 simplified gives 155/28
- So, 30/7 + 50/40 = 155/28
In mixed form: 515/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/7+50/40 30/14+50/40 30/7+50/80 90/7+50/40 30/21+50/40 30/35+50/40 30/49+50/40