Question 1

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Question text

Per aquest sistema

open curly brackets table attributes columnalign left end attributes row cell 3 invisible times x plus 5 invisible times y equals 6 end cell row cell 4 invisible times x minus 2 invisible times y equals negative 18 end cell end table close


digues si aquests valors són solucions:
 

   x equals 3 comma space y equals 1

   x equals negative 3 comma space y equals 3

   x equals negative 1 comma space y equals negative 4

   x equals negative 4 comma space y equals negative 5

 

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