1 = 45
2 = 135
3 = 135
4 = 45
5 = 45
6 = 135
7 = 135
8 = 45
Step-by-step explanation:
The formula of a triangle is A=½bh
Base=6.5
Height=4.8(since the height if the triangle and the width of the rectangle are same)
A=½(6.5)(4.8)
A=½(31.2)

A=15.6
Therefore, the area of the triangle LMN is 15.6
I hope this helps.
K=6.5
We move all terms to the left:
k-(6.5)=0
We add all the numbers together, and all the variables
k-6.5=0
We move all terms containing k to the left, all other terms to the right
k=6.5
It is 23a+72
see
6(-3a+12)+8a-13a
-18a+72+8a-13a
23a+72
do you understand