804÷12
=67
so the mean is 67
Answer:
1. 5x-11 = -16 so x= -1
2. 12x -8 = 48 so x=56/12
3. 5x +2 = 13 so. x= -3
4. 7x +11 = 81 so x = 10
5. 3x -2 = -15 so. x= -13/3
6. 5x + 2 = 35 so. x = 33/5
which means none of the above are correct, unless you have a different definition of
.