if the perimeter of the rectangle is(5x-9y+2z) units and its length is (3x-5z)units,find its breadth
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perimeter of rectangle = 2(l+b)
5x-9y+2z=2(3x-5z+b)
5c-9y+2z=6x-10z+2b
2b=5x-9y+2z+10z-6x
2b=-x-9y+12z
breadth, b= -x-9y+12z/2
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