Question

What is the value of x?
Enter your answer in the box.
units

Answer 1

x = 27

Explanation:

similar triangles

26/18 = 39/x

x = 39(18/26)

x = 27

could also use

39/x = (39 + 26) / (x + 18)

to get to the same result

39(x + 18) = x(39 + 26)

39x + 702 = 39x + 26x

702 = 26x

x = 27

or

18/x = 26/39

x = 18(39/26)

x = 27