Question:
$2 x-y=17$
$3 x+5 y=6$
Solution:
Given: $2 x-y=17$
$3 x+5 y=6$
Using Cramers Rule, we get
$\mathrm{D}=\mid 2-1$
$3 \quad 5 \mid=10+3=13$
$\mathrm{D}_{1}=\mid 17-1$
$6 \quad 5 \mid=85+6=91$
$\mathrm{D}_{2}=\mid 2 \quad 17$
$3 \quad 6 \mid=12-51=-39$
Now,
$\mathrm{x}=\frac{\mathrm{D}_{1}}{\mathrm{D}}=\frac{91}{13}=7$
$\mathrm{y}=\frac{\mathrm{D}_{2}}{\mathrm{D}}=\frac{-39}{13}=-3$
$\therefore \mathrm{x}=7$ and $\mathrm{y}=-3$
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