Explore IDNLearn.com's extensive Q&A database and find the answers you're looking for. Get comprehensive and trustworthy answers to all your questions from our knowledgeable community members.

Use elimination to solve the system [tex]$x - y = 5$[/tex] and [tex]$x + y = 3$[/tex].

Sagot :

Sure! Let's solve the system of equations using the elimination method.

We have the following system of equations:

1) [tex]\( x - y = 5 \)[/tex]
2) [tex]\( x + y = 3 \)[/tex]

To use the elimination method, we need to add the two equations together in such a way that one of the variables gets eliminated. Let's add the two equations:

[tex]\[ (x - y) + (x + y) = 5 + 3 \][/tex]

Combining like terms, we get:

[tex]\[ x - y + x + y = 8 \][/tex]

This simplifies to:

[tex]\[ 2x = 8 \][/tex]

Now, solve for [tex]\( x \)[/tex] by dividing both sides by 2:

[tex]\[ x = \frac{8}{2} = 4 \][/tex]

So we have [tex]\( x = 4 \)[/tex].

Next, we need to find the value of [tex]\( y \)[/tex]. We can substitute [tex]\( x = 4 \)[/tex] back into either of the original equations. Let's use the second equation:

[tex]\[ x + y = 3 \][/tex]

Substitute [tex]\( x = 4 \)[/tex]:

[tex]\[ 4 + y = 3 \][/tex]

Now, solve for [tex]\( y \)[/tex] by subtracting 4 from both sides:

[tex]\[ y = 3 - 4 = -1 \][/tex]

So we have [tex]\( y = -1 \)[/tex].

Therefore, the solution to the system of equations is:

[tex]\[ x = 4 \quad \text{and} \quad y = -1 \][/tex]

In other words, the solution in ordered pair form is [tex]\((4, -1)\)[/tex].
Your presence in our community is highly appreciated. Keep sharing your insights and solutions. Together, we can build a rich and valuable knowledge resource for everyone. IDNLearn.com has the solutions to your questions. Thanks for stopping by, and come back for more insightful information.