Add 12/72 and 5/45
12/72 + 5/45 is 5/18.
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,
12/72 = 12 × 5/72 × 5 = 60/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
5/45 = 5 × 8/45 × 8 = 40/360 - Add the two like fractions:
60/360 + 40/360 = 60 + 40/360 = 100/360 - 100/360 simplified gives 5/18
- So, 12/72 + 5/45 = 5/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/72+5/45 12/72+10/45 12/72+5/90 36/72+5/45 12/72+15/45 60/72+5/45 12/72+25/45 84/72+5/45 12/72+35/45