Question

In a kitchen there are three containers that can hold different quantities of water, as shown in the figure below: Three containers of the same shape but different sizes are shown, arranged from the shortest to the longest. The following quantities are written below the containers. x minus 1 liters below the first, x liters below the second, and x plus 1 liters below the third. How many liters of water can the three containers hold in all?

Answer 1

It's A 3x

Explanation:

I just did the test it's 3x hope this helped. :)

Answer 2

Altogether they can hold 3x liters of water.

We are adding the expressions:
(x-1)+x+(x+1)

We can combine the x terms together:
3x-1+1

Combine the -1 and +1:
3x+0
3x