12x = 120
If you need to find the length, it is 10 meters.
I will use x to represent the length of the room, since the letter l shows up like an I or a 1.
The simple equation is 12x = 120, since length times width equals area.
If you want to solve for the length, then divide both sides of the equation by 12. This leaves you with x = 10. So, the length of the room is 10 meters.
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