Dana filled the container with 3.5 liters of water. Her mother used 0.75 liters of water for cooking and 1.25 liters for a drink. How much water was left in the container?

Step-by-step explanation:

3.5 liters were originally in it.

then 0.75 liters were taken out.

that left 2.75 liters.

then 1.25 liters were taken out.

that left 1.5 liters in the container.

số lít nước mà mẹ Dana đã dùng là:

0,75 + 1,25 = 2 (l)

số nước còn lại trong thùng chứa là :

3,5 - 2 = 1,5 (l)

vậy số nước còn lại trong thùng chứa là 1,5 lít nước

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1