Question

Triangle perimeter, Algebra, systems of equations and inequalities.

Answer 1

x = 4

Explanation:

The perimeter of the triangle is the sum of the 3 sides, that is

2x + x + 5 = 17

3x + 5 = 17 ( subtract 5 from both sides )

3x = 12 ( divide both sides by 3 )

x = 4