If each person gets a 1/2 gallon of water, then how many people can share 64 gallons of water?

128 people

Step-by-step explanation:

every 2 people get a gallon so 2*64=128

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)