Answer:
(-16)
Step-by-step explanation:
Let the number = x
11 less than 3 times a number: 3x -11
75 less than the product of minus 1 and the number: (-1)*x - 75 = -x -75
3x - 11 = -x -75
3x -11 +x = -75
4x - 11 = -75
4x = -75 +11
4x = -64
x = -64/4
x = -16