Question 724077
Exactly what help you needs depends on WHY you need help.  Using the idea that you have no prior instruction about solving systems of two linear equations with two variables, my suggestion will be the least advanced.


Solve {{{3x-6y=2}}}, the first equation, for either variable, which I arbitrarily choose as y.  
{{{-6y=-3x+2}}}
{{{y=(1/2)x-1/3}}}.


Solve  {{{x+2y=0}}}, the second equation, for y.
{{{2y=-x}}}
{{{y=(-1/2)x}}}.


Equate both expressions for y and solve for x.
{{{(1/2)x-1/3=(-1/2)x}}}
(You do this work!)
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Once you found the value for x, use this value in either of the original equations to find the value for y.