F fc1123 New member Joined Feb 4, 2010 Messages 16 Oct 10, 2010 #1 I am having a problem of where to begin here's the problem: 4x-3y=-9 -4x -4x-9 so I got -3y=-9 but from there I am not sure where to go from there. x-y=-3

I am having a problem of where to begin here's the problem: 4x-3y=-9 -4x -4x-9 so I got -3y=-9 but from there I am not sure where to go from there. x-y=-3

D Denis Senior Member Joined Feb 17, 2004 Messages 1,465 Oct 10, 2010 #2 Substitution involves 2 equations. You posted one only: want us to guess or something? What grade are you in? Attend math classes?

Substitution involves 2 equations. You posted one only: want us to guess or something? What grade are you in? Attend math classes?

F fc1123 New member Joined Feb 4, 2010 Messages 16 Oct 10, 2010 #3 Ok the equation is 4x-3y=-9 x-y=-3

D Denis Senior Member Joined Feb 17, 2004 Messages 1,465 Oct 10, 2010 #4 fc1123 said: Ok the equation is 4x-3y=-9 x-y=-3 Click to expand... x - y = -3 : then x = y - 3 Substitute that in 1st equation and solve. If you can't, you need classroom help.

fc1123 said: Ok the equation is 4x-3y=-9 x-y=-3 Click to expand... x - y = -3 : then x = y - 3 Substitute that in 1st equation and solve. If you can't, you need classroom help.