Hello, lisamae!
Did you make a sketch?
i have a rectangular garden.
i need 42m of fencing to go all the way around.
the length of the garden is twice as long as the width.
what is the length and the width? Code:
2x
*--------------*
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x | | x
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*--------------*
2x
Let the width of the garden be x.
Then the length is 2x.
The amount of fencing is: .x + 2x + x + 2x .= .6x
We are told that the amount of fencing is 42 feet.
There is our equation . . . .6x .= .42
Hence: .x = 7 .and .2x = 14
Therefore, the garden will be 7-by-14 feet.