Question 1

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Question text

Per aquest sistema

open curly brackets table attributes columnalign left end attributes row cell negative 2 invisible times x plus y equals negative 2 end cell row cell x minus y equals 1 end cell end table close


digues si aquests valors són solucions:
 

   x equals negative 4 comma space y equals 1

   x equals 0 comma space y equals 0

   x equals negative 2 comma space y equals negative 3

   x equals 1 comma space y equals 0

 

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