Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

  (0 -  (22x4 • y)) • 2

Step  2  :

Multiplying exponents :

 2.1    2²  multiplied by  2¹   = 2^{(2 + 1)} = 2³

Final result :

   -23x4y