Thread: Need help on a simultaneous equation...

1. Need help on a simultaneous equation...

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.

2. Re: Need help on a simultaneous equation...

For 1) Multiply the second equation by 3, and then solve by elimination. For 2) use the fact that $x=2y+12$ 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.