Respuesta :

-3(y-5)=24
Multiply the number outside of the parenthesis with the numbers inside the parenthesis
-3y+15=24
Subtract 15 from both sides so that it cancels out the positive 15.
-3y=9
Divide both sides by -3 so that the only thing remaining on the left side is the variable x.
Final Answer: x= -3
y= -3

distribute -3 through parentheses
which will now be -3y+15=24
the you subtract 15
-3y=9 divide -3 
then solve for y 
so y =-3