Algebra 2 (1st Edition)

$(5,-1)$
Adding twice the $2^{nd}$ equation to the first gives us,$2x-2x-4y-y =5$ $$-5y = 5$$ $$y = -1$$ Plugging that back in, $$-x-2*(-1) = -3$$ $$-x=-5$$ $$x=5$$