Question

Can anyone solve this using the method: Elimination.?
3x - 9y = 3
6x - 3y = -24
Thanks(:

Answer 1

Don't you subtract everything by 2?

Answer 2

yes
-2*(3x - 9y = 3)

-6x +18y=-6
6x - 3y = -24

Answer 3

-6x +18y=-6
+ 6x - 3y = -24
----------------
0 +15y=-30
y=-30/15=
y=-2

Answer 4

Firstly find out the best way to have two variables match. We usually multiply an equation by a factor, but sometimes division will stop the number from getting larger, so choose wisely. (You cannot subtract, or add a value to everything: this is wrong!) Here, we'll multiply the first equation by 2 to make the second equation \(6x - 18y = 6\).

Now, subtract the second equation from the first equation. You should get \(-15y = 30\). Solve for y and then use this newfound value of y to solve for x.

Answer 5

6x - 3y = -24
=>
6x - 3(-2) = -24
6x=-24+6 = -18
x=-18/6=-3

Answer 6

so x=-3 y=-2

Answer 7

How you solve for x and y.?

Answer 8

Try reading my explanation and @baziham 's actual work.

Answer 9

multip -2 in eqution 1
then sum two equations with them
you get
0 +15y=-30
and by replacement "y =-2" in equation 1 (or two) you get x value

Answer 10

Oh ok, Thank you guys so much! You're such a big helpp.(:

Answer 11

your welcome