Respuesta :

Given

Answer

Matrices are equal if their corresponding elements are equal

3x - x =4

2x = 4 ;

x =4/2 ;

x= 2

Also , -(4y+8)= 7y + 14

-4y -8 =7y +14;

-4y - 7y =14 + 8;

-11y = 22 ;

y = -22/11

y=-2

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