Question

I NEED HELP!!!

Please answer this it would mean a lot!



Find the ordered pair (x,y) that satisfies the system of equations


2x + y &=-7
x =4+2y.

Answer 1

x= -2, y = -3

Explanation:

1. substitute x = 4+2y in the first equation:
`\begin{bmatrix}2\left(4+2y\right)+y=-7\end{bmatrix}`

simplify it :
`\begin{bmatrix}8+5y=-7\end{bmatrix}`

2. isolate y in 8 + 5y = -7 --> 5y = -7 - 8 -->

3. solve for y: 5y = -15 --> y = -15/5 --> y= -3

4. solve for x: x = 4 + 2y

x = 4 + 2(-3)

x = 4 + (-6)

x = -2