5x+2y=14


x−6y=22

1 answer

To solve the system of equations given by:

  1. \( 5x + 2y = 14 \)
  2. \( x - 6y = 22 \)

We can use the substitution or elimination method. Here, we'll use the substitution method.

First, let's solve the second equation for \( x \):

\[ x = 6y + 22 \]

Now we can substitute \( x \) in the first equation:

\[ 5(6y + 22) + 2y = 14 \]

Expanding this:

\[ 30y + 110 + 2y = 14 \]

Combining like terms:

\[ 32y + 110 = 14 \]

Next, we isolate \( y \) by subtracting 110 from both sides:

\[ 32y = 14 - 110 \] \[ 32y = -96 \]

Now, divide by 32:

\[ y = -\frac{96}{32} = -3 \]

Now that we have \( y \), we can find \( x \) using our expression for \( x \):

\[ x = 6(-3) + 22 \] \[ x = -18 + 22 \] \[ x = 4 \]

So, the solution to the system of equations is:

\[ (x, y) = (4, -3) \]

Verification

Let's verify by substituting \( x = 4 \) and \( y = -3 \) back into the original equations.

  1. For \( 5x + 2y = 14 \):

\[ 5(4) + 2(-3) = 20 - 6 = 14 \quad \text{(True)} \]

  1. For \( x - 6y = 22 \):

\[ 4 - 6(-3) = 4 + 18 = 22 \quad \text{(True)} \]

Both equations are satisfied. Thus, the final answer is:

\[ \boxed{(4, -3)} \]