Respuesta :

For a rectangle, you have two pairs of equal sides.

So for 27, you have x+4+x+4+x+x=60.

You can simplify to 4x+8=60.

Now subtract 8 from both sides, so you have 4x=52.

Divide both sides by 4 to get x by itself. This works because 4/4=1, and 1x just equals x. Your answer is x=13. 

 

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