Question 1

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Question text

Per aquest sistema

open curly brackets table attributes columnalign left end attributes row cell 4 invisible times x minus 4 invisible times y equals 24 end cell row cell negative 8 invisible times x plus 8 invisible times y equals negative 48 end cell end table close


digues si aquests valors són solucions:
 

   x equals 13 comma space y equals 7

   x equals 4 comma space y equals negative 2

   x equals 5 comma space y equals 0

   x equals negative 15 comma space y equals negative 21

 

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