Question

Solve by the elimination method
4x-5y=-3
-8x+10y=6

Answer 1

4x-5y=-3 ---(1)
-8x+10y=6 ---(2)

(1)x2 + (2):
2(4x-5y) + (-8x+10y) = 2(-3) + (6)
Can you solve it now?

Answer 2

still not!

Answer 3

I got that
4x+10y=6 24x-13y=-13

Answer 4

Oops! That doesn't look good at all.. But still you can try first. You'll see what happens!

Method of elimination:
1. choose a variable.
2. find their LCM
3. add/subtract the equation so that one variable in the equation can be cancelled out
4. Solve the remaining variable, if you can.

Answer 5

How did you get :I got that
4x+10y=6 24x-13y=-13
??

Answer 6

I found and example online and I did it as the example

Answer 7

Does it related to the question you posted? I mean direct relations

Answer 8

not really. the example was:
4x + 10y = 2, 3x + 5y = 5?

Answer 9

Alright. So, would you like solve the example you found first, or the question you posted here first?
(PS: Sorry for my poor grammar today!)

Answer 10

*would you like to solve

Answer 11

the question I posted first

Answer 12

Okay. Now you have a choice - do you prefer eliminate x or y in this question?
For convenience, the equations are copied here again.
4x-5y=-3
-8x+10y=6

Answer 13

let's say x

Answer 14

Okay. You want eliminate x, that means you want x to disappear when we combine the equations and solve it.

As mentioned before, when we use method of elimination, we add/subtract equations in order to cancel a variable (well, some variables sometimes, but in this case, one variable). So, how can we cancel the variable x in this question - add the equations or subtract the equations?

Answer 15

Hmm.. Do you understand what I've written/asked? If you don't, do tell me!

Answer 16

hey there the answer is 0 and by the way question cannot be of this type.

Answer 17

The answer is 0? Are you sure? I got different answer from yours! :|