Question

Solve the system of equations.
5x+1y=27
x=-2y

Answer 1

subtitute value of x=-2y in first equation
5(-2y) +1y =27
-10y +y = 27
-9y =27
((y = -3))
substitute this value of y in second equation.
x = -2 (-3)
((x = 6))
{(6,-3)}