Let x be the rent for one month in dollars.
\The rent for two month is 2x dollars.
\The amount for security deposit is 500 dollars.
\The total amount they pay the landlord is 2800 dollars.
\Therefore, the above situation represent the equation is .
Solve the equation for x.
Subtract 500 from each side.
\Divide each side by 2.
\.
The rent for one month is 1150 dollars.