Question:
$9 x+5 y=10$
$3 y-2 x=8$
Solution:
Given : $9 x+5 y=10$
$3 y-2 x=8$
Rearranging the second equation, the two equations can be written as
$9 x+5 y=10$
$-2 x+3 y=8$
Now,
$D=\mid 9 \quad 5$
$-2 \quad 3 \mid=27+10=37$
$D_{1}=\mid 105$
$8 \quad 3 \mid=30-40=-10$
$D_{2}=\mid 9 \quad 10$
$-2 \quad 8 \mid=72+20=92$
Using Cramer's rule, we get
$x=\frac{D_{1}}{D}=\frac{-10}{37}$
$y=\frac{D_{2}}{D}=\frac{92}{37}$
$\therefore x=\frac{-10}{37}$ and $y=\frac{92}{37}$