Question

4x+11y=7

4x+3y=-1
what are the steps

Answer 1

x = -1 , y = 1

Explanation:

Starting with x

x = 7 - 11y/4

4 × 7-11y/4 + 3y = -1

7 - 8y = -1

Now for y

7-8y = -1 ⇒ y = 1

Hence, x = -1 and y = 1

[RevyBreeze]

Answer 2

x = -1, y = 1

Explanation:

Given that:

`\begin{bmatrix}4x+11y=7\\ 4x+3y=-1\end{bmatrix}`

Isolate x for 4x + 11y = 7 which ⇒
`x=(7-11y)/(4)`

Substitute
`x=(7-11y)/(4)` into the equation: which is:

`\begin{bmatrix}4\cdot (7-11y)/(4)+3y=-1\end{bmatrix}`

Drop Down to:

`\begin{bmatrix}7-8y=-1\end{bmatrix}`

Isolate y for 7-8y = -1: y = 1

Thus,
`x=(7-11y)/(4)`

Substitute y = 1

Hence,

`x=(7-11\cdot \:1)/(4)=-1`

Solution ⇒ x = -1 and y = 1

~learn with lenvy~