Add 30/28 and 1/40
1st number: 1 2/28, 2nd number: 1/40
30/28 + 1/40 is 307/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
30/28 = 30 × 10/28 × 10 = 300/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
1/40 = 1 × 7/40 × 7 = 7/280 - Add the two like fractions:
300/280 + 7/280 = 300 + 7/280 = 307/280 - So, 30/28 + 1/40 = 307/280
In mixed form: 127/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28+1/40 30/28+2/40 30/56+1/40 30/28+1/80 90/28+1/40 30/28+3/40 30/84+1/40 30/28+5/40 30/28+7/40