Question

solve each system of the equation by elimination method.3x-4y=1x-7y=23

Answer 1

Solve the system by elimination. This way:

Now, use the value of y to find the value of x.

$\begin{gathered} 3x-4y=1 \\ 3x-4(-4)=1 \\ 3x+16=1 \\ 3x=-15 \\ x=-\frac{15}{3} \\ x=-5 \end{gathered}$

The solution of the system is x=-5 and y=-4.