Question

Solve

$5x-4y+8=0$
$7x+6y-9=0$.

• A. $x=\frac{6}{29}$ and $y=-\frac{101}{58}$
  
• B. $x=-\frac{6}{29}$ and $y=\frac{101}{58}$
  
• C. $x=-\frac{8}{29}$ and $y=\frac{101}{58}$
  
• D. None of these

Answer 1

The correct option is B

$x=-\frac{6}{29}$ and $y=\frac{101}{58}$

$5x-4y+8=0$...$\times 7$

$7x+6y-9=0$....$\times 5$

$35x-28y+56=0$

$35x+30y-45=0$

$58y=101$

$y=\frac{101}{58}$

$x=-\frac{6}{29}$