Respuesta :

Pulling out like terms :

 1.1     Pull out like factors :

   10 - 2y - 20x  =   -2 • (y + 10x - 5) 

Equation at the end of step  1  :Step  2  :Equations which are never true :

 2.1      Solve :    -2   =  0

This equation has no solution.
A a non-zero constant never equals

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