Question 399643
3x-5y= 7 
5x-2y=-1 
better use here the add it straight down method.
Multiply first equation at 2, and second equation at (-5)
6x-10y=14
-25x+10y=5
In this way we have now (-10y) in the first equation, and 10y in the second.
Add the first equation to the second
6x-10y=14
(-25x+10y)+(6x-10y)=5+14
.
6x-10y=14
-19x=19, then {{{x=-1}}}
.
put {{{x=-1}}} in the first equation 3x-5y= 7 
{{{3*(-1)-5y=7}}}
{{{-5y=7+3}}}
{{{-5y=10}}}
{{{y=-2}}}
Answer (-1;-2)