Question

Substitution
3x-y=4
x=4y+17

Answer 1

The answer to this equation is -1/11 , -47/11. Solve for the first variable in one of the equations, then substitute the result into the other equation.

Answer 2

3(4y+17)-y=4
12y+51-y=4
11y+51=4
11y=-47
y=-47/11

x=4(-47/11)+17
x=-188/11+17
x=-1/11

hope this helps!