Answer:
x=3
Step-by-step explanation:
If the triangles are congruent
13 = 4x+1
subtract 1 from each side
13-1 = 4x+1-1
12=4x
Divide by 4
12/4 = 4x/4
3=x
3
If the two triangles are congruent then:
13=4x+1
13-1=4x+1-1
Hope this helps!
