-7x - 2y = -13

x - 2y = 11

1 answer

To solve this system of equations, we can use the method of substitution.

From the second equation, we can solve for x in terms of y:
x - 2y = 11
x = 11 + 2y

Substitute this expression for x into the first equation:

-7x - 2y = -13
-7(11 + 2y) - 2y = -13
-77 - 14y - 2y = -13
-16y = 64
y = -4

Now substitute the value of y back into either of the original equations to solve for x:

x - 2(-4) = 11
x + 8 = 11
x = 11 - 8
x = 3

So the solution to the system of equations is x = 3 and y = -4.