Question

encontre o valor de x e y resolvendo a seguinte igualdade:
$\left[\begin{array}{ccc}x&3\\2&y\\\end{array}\right]$ . $\left[\begin{array}{ccc}2\\-3\end{array}\right]$ = $\left[\begin{array}{ccc}1\\3\end{array}\right]$

Answer 1

faça a multiplicaçao e iguale as seus respectivos valores

cai nisso:

2x-9=1
4-3y=3

resolvendo logo

2x-9=1
2x=10
x=10/2
x=5  #

4-3y=3
-3y= -1
3y=1
y=1/3 #