how to solve 3x = 7 – y and 2y = 14 – 6x
Re-work both equations
3x = 7 – y
3x + y = 7
2y = 14 – 6x
6x + 2y = 14
3x + y = 7
You have only one equation here. Rather, you have
two identical equations. The only thing you can
do is graph the line.
3x + y = 7
y = -3x + 7