Add 3/5 and 12/45
3/5 + 12/45 is 13/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
3/5 = 3 × 9/5 × 9 = 27/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
12/45 = 12 × 1/45 × 1 = 12/45 - Add the two like fractions:
27/45 + 12/45 = 27 + 12/45 = 39/45 - 39/45 simplified gives 13/15
- So, 3/5 + 12/45 = 13/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5+12/45 3/5+24/45 3/10+12/45 3/5+12/90 9/5+12/45 3/5+36/45 3/15+12/45 15/5+12/45 3/5+60/45 3/25+12/45 21/5+12/45 3/5+84/45 3/35+12/45