Answers

2014-09-29T20:30:45+08:00
1)\\\\3x-y=6\ \ |\ subtract\ 3x\ to\ both\ sides \\\\3x-3x-y=-3x+6 \\\\ -y=-3x+6 \ \ | \ multiply \ each \ term \ by \ (-1) \\ \\ y=3x-6
 
2)\\\\2x-y=4\ \ \ |\ subtract\ 2x\ to\ both\ sides \\\\2x-2x-y=-2x+4 \\\\ -y=-2x+4 \ \ | \ multiply \ each \ term \ by \ (-1) \\ \\ y=2x-4

3)\\\\ 2x-y=-4 \ \ |\ subtract\ 2x\ to\ both\ sides \\\\2x-2x-y=-2x-4 \\\\ -y=-2x-4 \ \ | \ multiply \ each \ term \ by \ (-1) \\ \\ y=2x+4

4)\\\\ y-3x=-8 \ \ |\ subtract\ 3x\ to\ both\ sides \\\\3x-3x-y=-3x-8 \\\\ -y=-3x-8 \ \ | \ multiply \ each \ term \ by \ (-1) \\ \\ y=3x+8



0
are u sure?
one last please
2x-y=4
and now you understand?
thankss