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Use the substitution method to solve the system of equations. Choose the correct ordered pair.

[tex]\[
\begin{array}{l}
3x - y = 3 \\
y = 2x + 2
\end{array}
\][/tex]

Sagot :

To solve the system of equations using the substitution method, here are the steps:

1. Write down the given system of equations.

\( \begin{array}{l}
3x - y = 3 \quad \text{(Equation 1)} \\
y = 2x + 2 \quad \text{(Equation 2)}
\end{array} \)

2. Substitute Equation 2 into Equation 1.

Since Equation 2 gives \( y = 2x + 2 \), we can substitute \( 2x + 2 \) for \( y \) in Equation 1:

\( 3x - (2x + 2) = 3 \)

3. Simplify the equation obtained from the substitution.

\( 3x - 2x - 2 = 3 \)

Combine like terms:

\( x - 2 = 3 \)

4. Solve for \( x \).

Add 2 to both sides of the equation:

\( x - 2 + 2 = 3 + 2 \)

So:

\( x = 5 \)

5. Substitute \( x = 5 \) back into Equation 2 to solve for \( y \).

Equation 2 is \( y = 2x + 2 \). Substituting \( x = 5 \):

\( y = 2(5) + 2 \)

\( y = 10 + 2 \)

\( y = 12 \)

6. Write the solution as an ordered pair.

The solution to the system of equations is \( (x, y) = (5, 12) \).

Thus, the correct ordered pair is [tex]\( (5, 12) \)[/tex].