Add 30/40 and 5/28
30/40 + 5/28 is 13/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
30/40 = 30 × 7/40 × 7 = 210/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
5/28 = 5 × 10/28 × 10 = 50/280 - Add the two like fractions:
210/280 + 50/280 = 210 + 50/280 = 260/280 - 260/280 simplified gives 13/14
- So, 30/40 + 5/28 = 13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40+5/28 30/40+10/28 30/80+5/28 30/40+5/56 90/40+5/28 30/40+15/28 30/40+5/84 30/40+25/28 30/40+35/28