Question

How to solve this system?

Answer 1

Answer:

x=2y+1

x=3y—9

2y+9y

hope it helps you

Answer 2

Answer:

first we change the sign of 2 equation

$x = 2y + 1 \\ - x = - 3y + 9 \: \\ solve \: and \: get \: \\ 0 = - y + 10 \\ - 10 = - y \\ then \: both \: side \: - \: sign \: cut \\ 10 = y$

I hope it's helpful for you