3. In #2, the rest of the mountain is covered in forest. What fraction of the mountain is forested?

 

The rest of the mountain is covered in forest so we take away the amount that is covered in rock or snow, and the rest is covered in forest.

 

1 - 7/12

 

Again we need common denominators. Change the 1 to 12/12

 

12/12 - 7/12 = 5/12