- 4 + -3 - (-11) =
4
10
-4
-18

Step-by-step explanation:

-4 + (-3) - (-11) = -4 + ( -3) + 11      {Additive inverse}

                      = -7 + 11

                      = 4

When two numbers are different sign, subtract and the result will take the sign of the bigger number

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong