Question 1020522
First off, learn to translate words into equations. 
That's step 2 of algebra, first being naming the variables.
It'll help you in the long run. 
{{{4X+3Y=-6}}}
{{{2X-3Y=24}}}
This was you can start to think more mathematically and you can see patterns.
If you add the two equations, you can eliminate Y.
{{{4X+3Y+2X-3Y=-6+24}}}
{{{6X=18}}}
{{{X=3}}}
Now use this and either of the two equations and solve for Y.