Get the most out of your questions with IDNLearn.com's extensive resources. Get the information you need quickly and accurately with our reliable and thorough Q&A platform.
Sagot :
To solve the system of equations
[tex]\[ \left\{\begin{array}{l} 2x + 3y = -11 \\ y = x - 2 \end{array}\right. \][/tex]
we start by substituting the expression for [tex]\( y \)[/tex] from the second equation into the first equation.
Given:
[tex]\[ y = x - 2 \][/tex]
Substitute [tex]\( y \)[/tex] into the first equation:
[tex]\[ 2x + 3(x - 2) = -11 \][/tex]
Simplify the equation:
[tex]\[ 2x + 3x - 6 = -11 \][/tex]
[tex]\[ 5x - 6 = -11 \][/tex]
Add 6 to both sides:
[tex]\[ 5x = -11 + 6 \][/tex]
[tex]\[ 5x = -5 \][/tex]
Divide by 5:
[tex]\[ x = -1 \][/tex]
Now, substitute [tex]\( x \)[/tex] back into the second equation to find [tex]\( y \)[/tex]:
[tex]\[ y = x - 2 \][/tex]
[tex]\[ y = -1 - 2 \][/tex]
[tex]\[ y = -3 \][/tex]
Therefore, the solution to the system of equations is:
[tex]\[ (x, y) = (-1, -3) \][/tex]
So, the correct answer is:
[tex]\[ \boxed{(-1, -3)} \][/tex]
[tex]\[ \left\{\begin{array}{l} 2x + 3y = -11 \\ y = x - 2 \end{array}\right. \][/tex]
we start by substituting the expression for [tex]\( y \)[/tex] from the second equation into the first equation.
Given:
[tex]\[ y = x - 2 \][/tex]
Substitute [tex]\( y \)[/tex] into the first equation:
[tex]\[ 2x + 3(x - 2) = -11 \][/tex]
Simplify the equation:
[tex]\[ 2x + 3x - 6 = -11 \][/tex]
[tex]\[ 5x - 6 = -11 \][/tex]
Add 6 to both sides:
[tex]\[ 5x = -11 + 6 \][/tex]
[tex]\[ 5x = -5 \][/tex]
Divide by 5:
[tex]\[ x = -1 \][/tex]
Now, substitute [tex]\( x \)[/tex] back into the second equation to find [tex]\( y \)[/tex]:
[tex]\[ y = x - 2 \][/tex]
[tex]\[ y = -1 - 2 \][/tex]
[tex]\[ y = -3 \][/tex]
Therefore, the solution to the system of equations is:
[tex]\[ (x, y) = (-1, -3) \][/tex]
So, the correct answer is:
[tex]\[ \boxed{(-1, -3)} \][/tex]
Thank you for being part of this discussion. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. IDNLearn.com is committed to providing the best answers. Thank you for visiting, and see you next time for more solutions.