The problem as stated is untenable, because 2x can not be equal to 2(x+6) .

However, if the problem is like 2x= 3+3x = - 2(x+6), then it would have a common solution.

We have then three equations 2x= 3+3x,

3+3x = -2(x+6) and

2x= -2(x+6)

Solving any one of these equation would give the desired answer. For Example

solving 2x = 3+3x, we get x= -3.

this satisfies 3+3x= -2(x+6) and 2x= -2(x+6) also.

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