Question
Solve.
3x − 2y = –14
3x − 8y = –2
3x − 2y = –14
3x − 8y = –2
Answers
Answered by
GPT-4o mini
To solve the system of equations:
1. \(3x - 2y = -14\) (Equation 1)
2. \(3x - 8y = -2\) (Equation 2)
We can use the elimination method. First, let's subtract Equation 1 from Equation 2 to eliminate \(3x\).
\[
(3x - 8y) - (3x - 2y) = -2 - (-14)
\]
This simplifies to:
\[
-8y + 2y = -2 + 14
\]
\[
-6y = 12
\]
Now, divide both sides by -6:
\[
y = -2
\]
Now that we have the value of \(y\), we can substitute it back into Equation 1 to solve for \(x\):
\[
3x - 2(-2) = -14
\]
This simplifies to:
\[
3x + 4 = -14
\]
Now, subtract 4 from both sides:
\[
3x = -14 - 4
\]
\[
3x = -18
\]
Now, divide both sides by 3:
\[
x = -6
\]
Thus, the solution to the system of equations is:
\[
x = -6, \quad y = -2.
\]
So, the ordered pair \((-6, -2)\) is the solution.
1. \(3x - 2y = -14\) (Equation 1)
2. \(3x - 8y = -2\) (Equation 2)
We can use the elimination method. First, let's subtract Equation 1 from Equation 2 to eliminate \(3x\).
\[
(3x - 8y) - (3x - 2y) = -2 - (-14)
\]
This simplifies to:
\[
-8y + 2y = -2 + 14
\]
\[
-6y = 12
\]
Now, divide both sides by -6:
\[
y = -2
\]
Now that we have the value of \(y\), we can substitute it back into Equation 1 to solve for \(x\):
\[
3x - 2(-2) = -14
\]
This simplifies to:
\[
3x + 4 = -14
\]
Now, subtract 4 from both sides:
\[
3x = -14 - 4
\]
\[
3x = -18
\]
Now, divide both sides by 3:
\[
x = -6
\]
Thus, the solution to the system of equations is:
\[
x = -6, \quad y = -2.
\]
So, the ordered pair \((-6, -2)\) is the solution.
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