Question

dadas as matrizes a=[8   2 x-1]  e b=[8       7] calcule os valores de x e y ,para a =b                                            6      1            y+2    1

Answer 1

$\left[\begin{array}{ccc}8&2x-1\\6&1\end{array}\right] = \left[\begin{array}{ccc}8&7\\y+2&1\end{array}\right] \\ \\ \left \{ {{2x-1=7} \atop {6=y+2}} \right. \\ \\ \left \{ {{2x=7+1} \atop {6-2=y}} \right. \\ \\ \left \{ {{x= \frac{7+1}{2} } \atop {y=4}} \right. \\ \\ \left \{ {{x=4} \atop {y=4}} \right.$