Question 1

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Question text

Per aquest sistema

open curly brackets table attributes columnalign left end attributes row cell 5 invisible times x minus 2 invisible times y equals negative 23 end cell row cell negative 5 invisible times x plus 2 invisible times y equals 23 end cell end table close


digues si aquests valors són solucions:
 

   x equals negative 5 comma space y equals negative 5

   x equals negative 11 comma space y equals negative 16

   x equals negative 1 comma space y equals 9

   x equals negative 4 comma space y equals 0

 

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