Question

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

Answer 1

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
$4y + 2y + 3 = 9$
$6y + 3 = 9$
$6y + 3 - 3 = 9 - 3$
$6y = 6$
$\frac{6y}{6} = \frac{6}{6}$
$y = 1$
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

Answer 2

The answer is {x,y} = {-5,1} 

I hope this helps