Add 45/28 and 4/40
1st number: 1 17/28, 2nd number: 4/40
45/28 + 4/40 is 239/140.
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,
45/28 = 45 × 10/28 × 10 = 450/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
4/40 = 4 × 7/40 × 7 = 28/280 - Add the two like fractions:
450/280 + 28/280 = 450 + 28/280 = 478/280 - 478/280 simplified gives 239/140
- So, 45/28 + 4/40 = 239/140
In mixed form: 199/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+4/40 45/28+8/40 45/56+4/40 45/28+4/80 45/28+12/40 45/84+4/40 45/28+20/40 45/28+28/40