Answer:

Step-by-step explanation:
There aren't any factors that cancel (except 3x). The best you can do is multiply it out.

20 divided by 0 isn’t possible :)
The answer is -1....................
Its detailed and explained you also check your work and give where you get the info from.
The area of the triangle is 270 centimeters. The way that I found that out is the equation 30x18/2