Add 30/75 and 3/45
30/75 + 3/45 is 7/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
30/75 = 30 × 3/75 × 3 = 90/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
3/45 = 3 × 5/45 × 5 = 15/225 - Add the two like fractions:
90/225 + 15/225 = 90 + 15/225 = 105/225 - 105/225 simplified gives 7/15
- So, 30/75 + 3/45 = 7/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/75+3/45 30/75+6/45 30/75+3/90 90/75+3/45 30/75+9/45 30/75+15/45 30/75+21/45