PLEASE HELP ASAP!!! Write an equation for the problem...
Three sides of a quadrilateral are equal and the fourth side is 16 cm long. What is the length of one of the equal sides, if the perimeter is 58 cm?

Respuesta :

Answer: 3x+16=58

Step-by-step explanation:

3x=58-16

3x=42

x=14

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