Answer:
600
Step-by-step explanation:
Answer:
X=-50
Step-by-step explanation:
18=-1/2x-7
-1/2x=18+7...... this is first step
X=25/(-1/2)...... the 2nd step
X=-50
Number of gallon of water = x
number of gallon to be evaporated = 90 - x
13.5(90 - x) = 0.25