Question

The perimeter of a television screen is 42 inches. The screen is 8 inches tall. How wide is it?

Answer 1

13 inches

Explanation:

Perimeter is all the sides added so your equation would be 8+8+x+x=42 then you combine like terms. 16+2x=42. Next you would isolate the variable 2x=26 and the divide the 2 on both sides and you get x=13. Meaning your width is 13 inches long