Add 28/56 and 12/45
28/56 + 12/45 is 23/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
28/56 = 28 × 45/56 × 45 = 1260/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
12/45 = 12 × 56/45 × 56 = 672/2520 - Add the two like fractions:
1260/2520 + 672/2520 = 1260 + 672/2520 = 1932/2520 - 1932/2520 simplified gives 23/30
- So, 28/56 + 12/45 = 23/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56+24/45 28/56+12/90 84/56+12/45 28/56+36/45 28/56+60/45 28/56+84/45