Answer:
Deshaun = Â $590 - $35x
Isabel : Â $790 - $55x
$590 - $35x = $790 - $55x
Step-by-step explanation:
For  Deshaun :
Amount in her account = $590
Amount she would have withdrawn by month x = $35 Ă— x = $35x
The amount she would have in her account = $590 - $35x
For Isabel :
Amount in her account = $790
Amount she would have withdrawn by month x = $55 Ă— x = $55x
The amount she would have in her account = $790 - $55x
Let x be the time when the money in their account would be equal  =
$590 - $35x = $790 - $55x