Question

5xy-9y=1 and xy + y = 3 please give answer ​

Answer 1

Answer:

y=1 and x=2

Step-by-step explanation:

 5xy-9y=1                                    so,

-5xy+5y=15                             x=2

=-14y=-14

=y=1

Answer 2

Step-by-step explanation:

$\blue{\underline{\bold{question : - }}}$

$\: {\huge{xy - 9y = 1}} \ \\ \\ \: {\huge{xy + y = 3}}$

$\red{\underline{\bold{solution: - }}}$

$\: {{xy - 9y = 1.......(1)}} \ \\ \\ \: {{xy + y = 3.........(2)}}$

$\boxed{from \: equation \: (2)}$

$\longrightarrow{\bold{y = \frac{3}{xy} \: .......(3)}}$

$\boxed{puting \: y \: value \: in \: equation \: (1)}$

$\implies{\it{xy - 9 \times \frac{3}{xy} = 1}}$

$\implies{\it{xy - \frac{27}{xy} = 1}}$

$\implies{xy = 1 + \frac{27}{xy}}$

$\implies{xy = \frac{27 +x y}{xy}}$

$\implies{1 = 27 + xy}$

$\implies{ - 26 = xy}$

${\blue{\huge{now}}}$

$\boxed{puting \: xy \: value \: in \: equation \: (3)}$

${\bold{y = \frac{3}{xy} }}$

$\implies{y = \frac{3}{ - 26}}$