Question

SOLVE THE SYSTEM OF EQUATIONS BY USING SUBSTITUTION.
y = -x - 6
y=x-4​

Answer 1

Put X-4 to where Y is in the first equation. So;
X-4= -X-6
Then solve to find X;
Add 6 to both sides;
X+2=-X
Subtract X from both sides;
2=-X-X
2= -2X
Divide both side by -2;
-1=X