if the perimeter of a rectangle is 16a+8b-6c and one of the its sides is 5a+3b-4c, find the other side.
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the formula for this is=2(l+b)
therefore, if 16a+8b-4c = perimeter of rectangle
l=5a+3b-4c
perimeter of 16a+8b-4c = 2( 5a+3b-4c+b)
16a+8b-4c = 10a+6b-8c+2b
16a -10a +8b-6b-2b -4c+8c
6a+4c
therefore, if 16a+8b-4c = perimeter of rectangle
l=5a+3b-4c
perimeter of 16a+8b-4c = 2( 5a+3b-4c+b)
16a+8b-4c = 10a+6b-8c+2b
16a -10a +8b-6b-2b -4c+8c
6a+4c
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