Zach456
contestada

The perimeter of a triangle is 42 cm. Sides #1 and #2 have equal length, while side #3 is two centimeters shorter than twice the length of side #1. How long is each side?
Define A variable (JUST ONE VARIABLE) and write an equation to sole the problem.
Thanks!

Respuesta :

Jasmine2200
 Equation:  2x + (2x - 2) = 42                         x = length of side 1
  
                  2x + (2x - 2) = 42
                  4x    + - 2     = 42
                            + 2        +2
                   4x/4             = 44/4
                     x                = 11
 Side 1 =   x      = 11 cm
 Side 2 =   x      = 11 cm
 Side 3 = 2x - 2 = 20 cm 

                  

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