Question

How to do elimination method

Answer 1

Can you post an example?

Answer 2

@DanielK16 please expalin me with an example im out of exqmples

Answer 3

elimination method in equation you are referring to correct?\

Answer 4

yaaa

Answer 5

Okay, if we are talking about solving systems of equations and you have two variables, here's how.

ex. 2x+y=9, 3x-y=1now solve for x

Answer 6

First line up the equations like so...
2x+y=9
3x-y=1
It helps to visualize...

Now, all you have to do is add. litterally just add straight down

so 2x and 3x would become 5x

and the Y's would cancel and the 9 and 1 would be 10

Now you new equation would look like

5x=10

Now, simply divide 5 to 10 to get X by itself and x=2

Answer 7

Now here are some pro tips, only use this method on systems of equations that have the same coefficient (the number in front of the variable) and if the like-variables (ex. X and X or Y and Y) can be easily manipulated to cancel each other out when added. And oh make sure the variables have the oppisite sign like negative Y and positive Y so they would actaully cancel each other out upon adding. If not but they do have the same coefficient then just muitiply everything in that equation by negative 1 to make that variable into an oppisite integer. best of luck my friend

Answer 8

See
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/solving-systems-addition-elimination/v/solving-systems-by-elimination
and the other videos in that section