Factorise completly
18rc-3rd-6r+rd
2.Solve the pair of simultaneous equations.?
2y=3x-13
5x-2y=23
r(18c-3d-6+d)
I suspect a typo, as that's as far as you can go with what you have.
Note that you have 2y=3x-13
So, use that in the other equation to get
5x-(3x-13)=23
Now just solve for x, then get y from that.