Draw a x on the square to make 4 triangles. triangles have a total of 12 sides.
[tex] 3(x + 5) - 2(x + 2) = 20 \\
3x + 15 - 2x - 4 = 20\\
5x + 11 = 20\\
5x = 9\\
x = 1\frac{4}{5} [tex]
Width: 84/3 = 28
Length: 93/3 = 31
There are 28 blocks along the width
There are 31 blocks along the length
I don’t know if this is what you wanted but here
I believe your answer here should be C because your distributing whats on the outside and inside of the brackets with each other.