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Solve the system of equations:
[tex]\[
\begin{cases}
2x + 3y = 1 \\
3x + 2y = y
\end{cases}
\][/tex]


Sagot :

Sure! Let's solve the given system of linear equations step-by-step:

Given the system:
[tex]\[ \left\{ \begin{array}{l} 2x + 3y = 1 \\ 3x + 2y - y = 0 \end{array} \right. \][/tex]

First, let's simplify the second equation:
[tex]\[ 3x + 2y - y = 0 \implies 3x + y = 0 \][/tex]

Now we have the simplified system of equations:
[tex]\[ \left\{ \begin{array}{l} 2x + 3y = 1 \\ 3x + y = 0 \end{array} \right. \][/tex]

Next, we can solve the second equation for [tex]\( y \)[/tex]:

From [tex]\( 3x + y = 0 \)[/tex]:
[tex]\[ y = -3x \][/tex]

Now substitute [tex]\( y = -3x \)[/tex] into the first equation:
[tex]\[ 2x + 3(-3x) = 1 \\ 2x - 9x = 1 \\ -7x = 1 \\ x = -\frac{1}{7} \][/tex]

Now that we have the value of [tex]\( x \)[/tex], substitute [tex]\( x = -\frac{1}{7} \)[/tex] back into [tex]\( y = -3x \)[/tex] to find the value of [tex]\( y \)[/tex]:
[tex]\[ y = -3\left(-\frac{1}{7}\right) \\ y = \frac{3}{7} \][/tex]

Therefore, the solution to the system of equations is:
[tex]\[ x = -\frac{1}{7}, \quad y = \frac{3}{7} \][/tex]