Question

The perimeter of a rectangle is (36+x)cm,it's length is (x+2) and width is 6cm.Find x
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Answer 1

x=20

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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