Answered

Explore Westonci.ca, the top Q&A platform where your questions are answered by professionals and enthusiasts alike. Join our Q&A platform to connect with experts dedicated to providing precise answers to your questions in different areas. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

Solve the simultaneous equations
3x−4y=18
3x−y=9

Sagot :

turky69420

Answer:

-3

Step-by-step explanation:

Difference on each side is +3y and -9

3y=-9

y=-3

Answer:

[tex]x=2, y=-3[/tex]

Step-by-step explanation:

Multiply the first equation by -1 to have your two equations now be:

[tex]-3x+4y=-18[/tex]

[tex]3x-y=9[/tex]

Then add the two equations to get:

[tex]3y=-9[/tex]

Divide both sides by 3 to reach:

[tex]y=-3[/tex]

Then substitute [tex]y[/tex] for [tex]-3[/tex] in either of the two first original equations and solve for x, getting:

[tex]x=2[/tex]

Hope this helps :)

We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. Get the answers you need at Westonci.ca. Stay informed by returning for our latest expert advice.