**Let's do another one:**

**The LCM of 5 and 9 is 45... So our LCD is 45.**

**Subtraction works the same way.**

**The LCM of 11 and 22 is 22... So the LCD is 22.**

**We just need to change the .**

**Done!**

**Let's do another one:**

**The LCM of 5 and 9 is 45... So our LCD is 45.**

**Subtraction works the same way.**

**The LCM of 11 and 22 is 22... So the LCD is 22.**

**We just need to change the .**

**Done!**