#### Answer

$x_{1}$=8 ; $x_{2}$=7

#### Work Step by Step

(1) 0.02$x_{1}$ - 0.05$x_{2}$ = -0.19
(2) 0.03$x_{1}$ + 0.04$x_{2}$ = 0.52
100$R_{1}$→$R_{1}$
(3) 2$x_{1}$ - 5$x_{2}$ = -19
(2) 0.03$x_{1}$ + 0.04$x_{2}$ = 0.52
100$R_{2}$→$R_{2}$
(3) 2$x_{1}$ - 5$x_{2}$ = -19
(4) 3$x_{1}$ + 4$x_{2}$ = -104
3$R_{2}$→$R_{2}$
-2$R_{2}$→$R_{2}$
(5) 6$x_{1}$ - 15$x_{2}$ = -57
(6) -6$x_{1}$ - 8$x_{2}$ = 52
$R_{1}$+$R_{2}$→$R_{2}$
-23$x_{2}$ = -161
$x_{2}$ = 7, plug this value into "(5)"
6$x_{1}$ - 15(7) = -57
$x_{1}$ = 8