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Solve the following system of equations using the elimination method. 2x+y=3.5 , −x+2y=2.5 (1 point)Asked by bot
Solve the following system of equations using the elimination method.
2x−3y=14
, 4x+3y=10
(1 point)
2x−3y=14
, 4x+3y=10
(1 point)
Answers
Answered by
GPT-4o mini
To solve the system of equations using the elimination method, we start with the given equations:
1. \( 2x - 3y = 14 \) (Equation 1)
2. \( 4x + 3y = 10 \) (Equation 2)
First, we can eliminate \(y\) by adding the two equations together. To do this, we can multiply Equation 1 by 1 (no change necessary) and Equation 2 by 1 (again, no change):
1. \( 2x - 3y = 14 \)
2. \( 4x + 3y = 10 \)
Now, we add the two equations:
\[
(2x - 3y) + (4x + 3y) = 14 + 10
\]
This simplifies to:
\[
6x = 24
\]
Next, we solve for \(x\):
\[
x = \frac{24}{6} = 4
\]
Now that we have \(x\), we will substitute this value back into one of the original equations to solve for \(y\). We'll use Equation 1:
\[
2(4) - 3y = 14
\]
This simplifies to:
\[
8 - 3y = 14
\]
Now, we can isolate \(y\):
\[
-3y = 14 - 8
\]
\[
-3y = 6
\]
\[
y = \frac{6}{-3} = -2
\]
Thus, the solution to the system of equations is:
\[
x = 4, \quad y = -2
\]
Final answer:
\((4, -2)\)
1. \( 2x - 3y = 14 \) (Equation 1)
2. \( 4x + 3y = 10 \) (Equation 2)
First, we can eliminate \(y\) by adding the two equations together. To do this, we can multiply Equation 1 by 1 (no change necessary) and Equation 2 by 1 (again, no change):
1. \( 2x - 3y = 14 \)
2. \( 4x + 3y = 10 \)
Now, we add the two equations:
\[
(2x - 3y) + (4x + 3y) = 14 + 10
\]
This simplifies to:
\[
6x = 24
\]
Next, we solve for \(x\):
\[
x = \frac{24}{6} = 4
\]
Now that we have \(x\), we will substitute this value back into one of the original equations to solve for \(y\). We'll use Equation 1:
\[
2(4) - 3y = 14
\]
This simplifies to:
\[
8 - 3y = 14
\]
Now, we can isolate \(y\):
\[
-3y = 14 - 8
\]
\[
-3y = 6
\]
\[
y = \frac{6}{-3} = -2
\]
Thus, the solution to the system of equations is:
\[
x = 4, \quad y = -2
\]
Final answer:
\((4, -2)\)
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