Answer:
6x = 42
Step-by-step explanation:
The formula to find the area of a rectangle is [tex]A = LxW[/tex]. Since we have a value for the width, we simply need to find what to multiply to 6 to get 42.
Let x = length
6x = 42
We then divide both sides by 6 to find the value of x.
[tex]\dfrac{6x}{6}=\dfrac{42}{6}[/tex]
[tex]x=7[/tex]
So we know the length is 7.
To check the answer we substitute x with 7.
[tex]6(7)=42[/tex]
[tex]42=42[/tex]
