U have to list the factors so i can answer the question
If AE is x+50 then the whole thing must be x=50, If a portion of that, CE, is x+32, then the rest of it, AC, must be x+18, because no matter what X is, 32+18=50.
Hopes this helps mate :)
They begin as streams in mountains or hills
Droughts: Droughts are usually caused by high temperatures and to super dry weather
We cant see the picture sorry