Question

X=-2y-3 And 4y-x=9 solve equation

Answer 1

the answer is {x,y} = {-5,1}

I hope this helps

Answer 2

Solve:

`x = - 2y - 3 \\ 4y - x = 9`
Step1:
Get the variable (x or y) alone or find the equation that has the variable already alone, which would be the first equation.

`x = - 2y - 3`
Step 2:
Replaced "x" in the second equation with the equation in the first equation. This is used to find "y"

`4y - ( - 2y - 3) = 9`
Step 3:
Solve and Simplify

`4y + 2y + 3 = 9`

`6y + 3 = 9`

`6y + 3 - 3 = 9 - 3`

`6y = 6`

`(6y)/(6) = (6)/(6)`

`y = 1`
Step 4:
Use one of the original equation:

`x = - 2y - 3 \\ 4y - x = 9`

Replace "y" from any of the problem (I recommended the first equation) to find "x"

`x = - 2(1) - 3`

`x = - 2 - 3`

`x = - 5`
The answer is: (-5, 1)

To check your answer:

`x = - 2y - 3`


`(- 5)= - 2(1) - 3`

`( - 5) = - 2 - 3`

`( - 5) = - 5`
You will find the same answer if u use the other way. But, the way I show you is much easier and faster to find the answer.

I hope this helped u