Question

the width of a rectangle is 4 inches shorter than its length. if the length of the rectangle is 7 inches, write and solve an addition equation to find the width of the rectangle

choose the correct answer

a 4 = w + 7
b 7 = w + 4
c w = 7 + 4
d 7 = w - 4

the rectangle is inches wide
(type an integer or a decimal)

Explanation:

Step1: Set up the equation

Let \( w \) be the width of the rectangle. Given that the width is 4 inches shorter than the length (\( l = 7 \) inches), we can write the equation \( 7=w + 4 \) (since length \(=\) width \(+4\)).

Step2: Solve the equation for \( w \)

Subtract 4 from both sides of the equation \( 7=w + 4 \).
\( 7-4=w+4 - 4 \)
\( 3=w \)

Answer:

B. \( 7 = w+4 \); The rectangle is \( 3 \) inches wide.