Add 18/7 and 30/40
1st number: 2 4/7, 2nd number: 30/40
18/7 + 30/40 is 93/28.
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,
18/7 = 18 × 40/7 × 40 = 720/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
30/40 = 30 × 7/40 × 7 = 210/280 - Add the two like fractions:
720/280 + 210/280 = 720 + 210/280 = 930/280 - 930/280 simplified gives 93/28
- So, 18/7 + 30/40 = 93/28
In mixed form: 39/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7+30/40 18/7+60/40 18/14+30/40 18/7+30/80 54/7+30/40 18/7+90/40 18/21+30/40 90/7+30/40 18/35+30/40 18/49+30/40