Answered

At Westonci.ca, we provide clear, reliable answers to all your questions. Join our vibrant community and get the solutions you need. Get quick and reliable solutions to your questions from knowledgeable professionals on our comprehensive Q&A platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

What is the first step to solve the following system of equations using substitution?

[tex]\left\{\begin{array}{l}x-y=-1 \\ 2x-y=3\end{array}\right.[/tex]

A. Multiply the first equation by 2.

B. Add the two equations together.

C. Solve the first equation for [tex]x[/tex].

Sagot :

GinnyAnswer
To solve the given system of equations using the substitution method, the first step is to solve one of the equations for one of the variables. Let's analyze the given system:

[tex]\[ \left\{ \begin{array}{l} x - y = -1 \\ 2x - y = 3 \end{array} \right. \][/tex]

The first equation is:
[tex]\[ x - y = -1 \][/tex]

To solve the first equation for [tex]\( x \)[/tex], we need to isolate [tex]\( x \)[/tex]. So, we add [tex]\( y \)[/tex] to both sides of the first equation:

[tex]\[ x = y - 1 \][/tex]

This gives us an expression for [tex]\( x \)[/tex] in terms of [tex]\( y \)[/tex].

Therefore, the first step in solving this system of equations using substitution is:

Solve the first equation for [tex]\( x \)[/tex].
Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Thank you for visiting Westonci.ca. Stay informed by coming back for more detailed answers.