What is the value of x in the equation (x/5) - 1 = 5.2

I need the work btw

 31

Step-by-step explanation:

(x/5) - 1 = 5.2

x/5 = 6.2

x = 6.2 x 5

x = 31

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.