Question

 Dadas as matrizes;  A=  x-y  4

                                        3    8

                                 B=  4     4

                                        3      2.x

Determine  x e y.

                                      

Answer 1

2x = 8
x = 8 / 2
x = 4

sabendo o valor de x vamos calcular o de y 

x - y = 4
4 - y = 4
-y = 4 - 4
-y = 0      .(-1) 
y = 0