Question

The perimeter of the triangle is 120 cm.

Work out the value of x.
2x-5
2x + 11
3x - 12

Answer 1

x = 18

Explanation:

Given expressions for the sides of the triangle:

Side 1: 2x - 5

Side 2: 2x + 11

Side 3: 3x - 12

Perimeter = Sum of the sides

So, we have:

(2x - 5) + (2x + 11) + (3x - 12) = 120

Simplify:

7x - 6 = 120

Now solve for x.

7x = 126

x = 18