Add 10/45 and 20/72
10/45 + 20/72 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
10/45 = 10 × 8/45 × 8 = 80/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Add the two like fractions:
80/360 + 100/360 = 80 + 100/360 = 180/360 - 180/360 simplified gives 1/2
- So, 10/45 + 20/72 = 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/45+20/72 10/45+40/72 10/90+20/72 30/45+20/72 10/45+60/72 50/45+20/72 70/45+20/72