Question

solve it as fast as possible step by step

Answer 1

For x=1

x1-3=3
x=6

For x=2

2x-3=3
2x=6
x=6/2
x=3

For x=3

3x-3=3
3x=3+3
3x=6
x=6/3
x=2

So x have 3 values : 6,3,2

x^- = (6+3+2)/3
x^- = 11/3