I have tried the other questions but i'm stuck on this last 3 and would really appreciate the help as I am finding it difficult.
2x+3y=12 x=?
3x+y=11 y=?
4x+3y=15 x=?
x-2y=12 y=?
x+4y=14 x=?
3x+2y=-3 y=?
Thanks.
For 1) Multiply the second equation by 3, and then solve by elimination. For 2) use the fact that and substitute this into the first equation. For 3), multiply the second equation by 2 and then solve by elimination.
If you seek further help, please show some work.