Answer:
The correct answer is A) -3
Explanation:
To solve this system of equations, take what y is equal to in the first equation and input it for y in the second equation.
7x + 4y = -1
7x + 4(-x + 2) = -1
Now solve for x.
7x + 4(-x + 2) = -1
7x -4x + 8 = -1
3x + 8 = -1
3x = -9
x = -3