Two pumps are filling large vats of liquid. One vast is empty, and the pump is filling it at the rate of 6 gallons per minute. The other is already filled with 10 gallons, and it continues to fill at the rate of ; galling per minute. Write an equation to show when the two vats will have an equal amount of liquid. Use x as your variable.

The equation to show when the two vats will have an equal amount of liquid is:

6x = 10 + x