Solving Equations Using Substitution Practice

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Question
Solve the system of equations.
5x+2y=14

x−6y=22
(1 point)
(
,
)

1 answer

To solve the system of equations using substitution, we have the following equations:

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

Step 1: Solve one of the equations for one variable

Let's solve Equation 2 for \( x \):

\[ x = 6y + 22 \]

Step 2: Substitute this expression into the other equation

Now we substitute \( x \) in Equation 1:

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

Step 3: Distribute and simplify

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

Combine like terms:

\[ 32y + 110 = 14 \]

Step 4: Solve for \( y \)

Subtract 110 from both sides:

\[ 32y = 14 - 110 \]

\[ 32y = -96 \]

Now divide by 32:

\[ y = -3 \]

Step 5: Substitute \( y \) back to find \( x \)

Now, we substitute \( y = -3 \) back into the equation we derived for \( x \):

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

\[ x = -18 + 22 \]

\[ x = 4 \]

Final Solution

The solution to the system of equations is:

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

So the answer is:

\((4, -3)\)