Add 45/75 and 3/40
45/75 + 3/40 is 27/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 40 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 75 × 8 = 600,
45/75 = 45 × 8/75 × 8 = 360/600 - Likewise, for the 2nd fraction, since 40 × 15 = 600,
3/40 = 3 × 15/40 × 15 = 45/600 - Add the two like fractions:
360/600 + 45/600 = 360 + 45/600 = 405/600 - 405/600 simplified gives 27/40
- So, 45/75 + 3/40 = 27/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75+3/40 45/75+6/40 45/75+3/80 45/75+9/40 45/75+15/40 45/75+21/40