Let X be width <span>of a rectangle, then
(x+8) - </span><span>length
(x+x+8)*2 = 52
x+x+8 = 52/2
2x+8 = 26
2x = 26-8
2x = 18
x = 18/2
x = 9 cm
Answer: 9 cm.</span>
This is simply solving an equation...
You do this...
3x-7=14
+7 +7
---------------
3z=21
--- ----
3 3
z=7
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