Answer:
13k
Step-by-step explanation:
Given: 
Finding the equivalent expression.
We know the rule of addition is that adding two positive integers will give positive result or sum.
Now, lets find the equivalent expression of .
∴ 
Hence, the required equivalent expression is 13k.
Answer:
arithmitic
Step-by-step explanation:
You just have to figure it where you can place 2 solid lines and get 10 triangles ( i can only get 9). Think about the pentagon in the middle of the triangles and see if somehow you can create more triangles using only the two straight lines.
Answer:
3
Step-by-step explanation:
23=5x-4
Add 4 to both sides
27=9x
Divide 9 To both sides
27/9 9x/9
x=3
