Write and solve a real-world problem that can be modeled by the equation 0.75x-18.50=0.65x

Diana had chocolate, and ate some, leaving 0.75 of it for Sarah.

First you need to make X = to the whole number 
So add .75x to the other side to get 1.4x the divide it by 18.5
Think of banking as a real world problem x can be tax dollars for the state the bank is located in 

They sought new allies to germany tried to get mexico to join and put pressure on the us. the us joined the allies because of the lucitania