Question

Solve the following equation; 6x+3y=13 -9x-4y=-17

Answer 1

You can not do the first one because the things do not add up

Answer 2

First solve for y with first equation:

3y = 13-6x      so    y = 13/3-2x

Plug that in with 2nd equation:

-9x-4(13/3-2x)=-17

-9x-52/3-8x=-17

-17x=-34 1/3

x = 34 1/3 
       17

x = 103/51