Add 56/72 and 12/45
56/72 + 12/45 is 47/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
56/72 = 56 × 5/72 × 5 = 280/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
12/45 = 12 × 8/45 × 8 = 96/360 - Add the two like fractions:
280/360 + 96/360 = 280 + 96/360 = 376/360 - 376/360 simplified gives 47/45
- So, 56/72 + 12/45 = 47/45
In mixed form: 12/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72+24/45 56/72+12/90 56/72+36/45 56/72+60/45 56/72+84/45