book Maths Puzzle Numerical Ability

3-6(x+3)=33

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Hi!
I tried to solve this problem but my answer came out in the form of a fraction. I think I am doing it the wrong way. Please show me how to solve this system using substitution
Why does the absolute value of x-2=-4 have no solution. I can work these problems out but I don't understand why some have no solutions.