Answer:
x=20
Step-by-step explanation:
Given that P=36+x
l=x+2
w=6
x=?
Recall that the perimeter of a rectangle is
P=2(l+w)
inputting our values we have
36+x=2(x+2+6)
36+x=2(x+8)
open the bracket
36+x=2x+16
Collecting like terms we have
36-16=2x-x
20=x
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