What is the solution to the system of equationsy=4x+11 and y =-2x-1

For this case we must solve a system of two equations with two unknowns, given by "x" and "y".

We have:

We multiply (2) by -1:

We add (1) and (3):

Clearing x:

We substitute in (2)

Thus, the solution of the system is

The solution of the system is

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w