Question

X=-2y-3
8y-4x=-12
Solve by elimination

Answer 1

`\left\{\begin{array}{ccc}x=-2y-3&|+2y\\8y-4x=-12&|:4\end{array}\right\\\underline{+\left\{\begin{array}{ccc}2y+x=-3\\2y-x=-3\end{array}\right}\qquad|\text{add both sides of equations}\\.\qquad4y=-6\qquad|:4\\.\qquad y=-1.5\\\\\text{substitute the value of y to the first equation}\\\\x=-2(-1.5)-3\\x=3-3\\x=0\\\\Answer:\ x=0\ and\ y=-1.5\to(0,\ -1.5)`