Solve the System by the Method of Substitution $$\left\{ \begin{array} { l } 1.3 x + 0.6 y = 5.7 \\0.9 x - 0.2 y = 2.1\end{array} \right.$$

Multiple Choice

Solve the system by the method of substitution.​ $$\left\{ \begin{array} { l } 1.3 x + 0.6 y = 5.7 \\0.9 x - 0.2 y = 2.1\end{array} \right.$$ ​

A) (-3,3)
B) (3,3)
C) (-3,-3)
D) (-5,-5)
E) (5,5)