Step-by-step explanation:

Given

 ME = 2x + 1 m, SA = x + 2 m

Solution

 2x + 1 = x + 2

 2x - x = 2 -1

 x = 1

 2x + 1 = 2(1) + 1 = 3

 x + 2 = (1) + 2 = 3

Answer:

 ME = 3 m

 SA = 3 m