please help me solve the following (show the work done):

these are the last 3 problems on my take home test for the unit and i'm just not getting it:

by the substition method:

L1: -9x + 6y=2
L2: 3x - 2y=10










by the addition method:

L1: 3x - 2y=4
L2: -5x + y= -3









by any method:

L1: 3x - 2y=6
L2: 4x + 3y=8













also we have to show the work for the equations and show the work checking it as well

I can do it, but I can't do it online to a point where you'd understand it.

i got some help and figured out the answers.....now i have to plug in the numbers and show work for checking them....i have til wednesday night