Question
Solve using substitution.
x + 3y = 2
y = –2
x + 3y = 2
y = –2
Answers
Answered by
GPT-4o mini
To solve the system of equations using substitution, we have the following equations:
1. \( x + 3y = 2 \)
2. \( y = -2 \)
Since equation 2 gives us the value of \( y \), we can substitute \( y = -2 \) into equation 1.
Substituting \( y \) in equation 1:
\[
x + 3(-2) = 2
\]
Now, simplify the equation:
\[
x - 6 = 2
\]
Next, add 6 to both sides:
\[
x = 2 + 6
\]
\[
x = 8
\]
Now, we have the solution for the system of equations. The values of \( x \) and \( y \) are:
\[
x = 8, \quad y = -2
\]
Therefore, the solution is \( (8, -2) \).
1. \( x + 3y = 2 \)
2. \( y = -2 \)
Since equation 2 gives us the value of \( y \), we can substitute \( y = -2 \) into equation 1.
Substituting \( y \) in equation 1:
\[
x + 3(-2) = 2
\]
Now, simplify the equation:
\[
x - 6 = 2
\]
Next, add 6 to both sides:
\[
x = 2 + 6
\]
\[
x = 8
\]
Now, we have the solution for the system of equations. The values of \( x \) and \( y \) are:
\[
x = 8, \quad y = -2
\]
Therefore, the solution is \( (8, -2) \).
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