Question

What is the solution for this system of linear equations: Tell me what I did wrong? :/
y=4x+13
y=-3x+6
SO, -3x+6=4x+13
subtracting 3 from both sides
6=1x+13
subtract 13 from both sides
-7 divided by 1x
x=-7

then to find Y
y=4(-7)+13
y=-28+13
y=-15

Answer 1

when you have -3x+6=4x+13, you do NOT subtract 3x from both sides.

you instead add 3x to both sides

Answer 2

this is because the initial -3x adds to 3x to get

-3x + 3x = 0x = 0

and the x terms go away on the left side

Answer 3

so if you added 3x to both sides, you go from

-3x+6=4x+13

to

6 = 7x + 13

Answer 4

okay so I have 6=7x+13
do I add 13 or subtract 13?

Answer 5

you want to undo the +13 on the right side

so you subtract 13 from both sides.