Question

IS 4 -3 1-2 -1 4 -5 4 -3 -2 2 3 -2 -3 the piant op steer X=-3 349 3x-2 31-32-4 ya! ya E = 4) 4x + y = 2 x - y = 3

Answer 1

`\text{x = 7 and y = -1}`

Here, we want to solve the system of equations by substitution

From the first equation, we can have an equation in terms of x

We have this as;

`x\text{ = -7y}`

Now, proceed to substitute this into the second equation

We have this as;

`\begin{gathered} 2(-7y)\text{ - 8y = 22} \\ -14y-8y\text{ =22} \\ -22y\text{ = 22} \\ y\text{ = }(22)/(-22)\text{ = -1} \end{gathered}`

To get the value of x, what we have to do is to substitute the value of y in the equation we had for x

We have this as;

`\begin{gathered} x\text{ = -7y} \\ x\text{ = -7(-1)} \\ x\text{ =7} \end{gathered}`