Question

Y=x+3 2x-y=-1 write solution as ordered pair

Answer 1

The first equation tells you that $y=x+3$. If you substitute this expression for $y$ in the second, we have

$2x-(x+3)=-1 \iff x-3=-1 \iff x=2$

And we can deduce $y=x+3=2+3=5$