84.87=115%
x =100%



x=73.8
the number is x=73.8=100%
Answer: AB=DE=6 units

Step-by-step explanation:
Given: ∆ABC ≅ ∆DEF
We know that if two triangles are congruent then their corresponding sides and angles are congruent. [By CPCTC]
Now, AB≅DE=6 units
Therefore, AB= 6units
EF≅BC=4 units and AC=DF


Set up an system:
x+y=52
x=y-2
Substitute in:
(y-2)+y=52
2y-2=52
2y=54
y=27
27-2=25
The answers are 27 and 25