Question

Oil-painting frame. The perimeter of the ornate frame of an oil painting is 146 in. The width is 5 in. less than the length. Find the dimensions?

Answer 1

Well we know this is a rectangle since the width and length aren't the same

The perimeter of a rectangle is 2L + 2W and equals 146

P = 2L + 2W

the width is 5in less than the length

w = L - 5

So now you know what 'w' equals....so you can substitute that into that first equation you have

146 = 2L + 2(L - 5)

now solve for L