Can someone help me figure out this problem? Thank you. A stained-glass window in a church is in the shape of a square. The perimeter of the square is 7 times the length of a side in meters, decreased by 12. Find the length of a side of the window.

Question

Can someone help me figure out this problem?  Thank you. A stained-glass window in a church is in the shape of a square. The perimeter of the square is 7 times the length of a side in meters, decreased by 12. Find the length of a side of the window.

anonymous · Answer

Remember the perimeter of a square=sum of lengths of all sides=4x (if a square has side-length of x)

anonymous · Answer

let x be the length of the square, what is 7 times length decreased by 12?

anonymous · Answer

I understand the 7X-12 part.  I just cannot figure it out from there and how the answer comes to 4.

anonymous · Answer

we haven't got to the answer yet...
 7 times the length of a side in meters, decreased by 12=7x-12 (you said above)
this should be equal to the perimeter of the square (which is 4x, refer to my first reply)
so you can come up with an equation?

anonymous · Answer

7x-12=?

anonymous · Answer

Yes I believe so. 7X-12=4X

anonymous · Answer

right...can you solve it for x?

anonymous · Answer

yes I have it from here.  Thank you very much!

anonymous · Answer

okio