Question 1061546
The question should be clarified.

If I work left hand and right hand sides independently, here's what happens:
6(-2-x) = -3(2x+5) ??   
-12-6x = -6x - 15
      -12 = -15          so the original equation is not a valid equation


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Maybe you wanted this...
6(-2-x) = -12-6x  = -3(4+2x) = -3(2x+4)