Answered

IDNLearn.com offers expert insights and community wisdom to answer your queries. Get accurate and detailed answers to your questions from our knowledgeable and dedicated community members.

 2x- 3y=9

 

5x+3y=12

 

How would i solve this? I dont understand this and i really need help with it!Also I have to graph the anwsers afterward on a graph, so i really need the help. I appreciate it:)

Sagot :

Lilithidn
[tex]\begin{cases} 2x- 3y=9 \\5x+3y=12 \end{cases}\\ + \ \ ------- \\ 7x=21 \ \ /: 7\\ \\x=\frac{21}{3}\\ \\ x=3 \\ \\2x- 3y=9[/tex]

[tex]2*3-3y=9\\ \\6-3y =9\\ \\-3y=9-6\\ \\-3y=3 \ \ / :(-3)\\ \\x=-1\\ \\ \begin{cases} x=3\\y= -1 \end{cases}[/tex]

[tex]graph\\ \\\begin{cases} 2x- 3y=9 \\5x+3y=12 \end{cases}\\ \\ \begin{cases} - 3y=-2x+9\ \ /:(-3) \\ 3y=-5x+12 \ \ /:3 \end{cases}\\ \\ \begin{cases} y= \frac{2}{3}x-3 \\ y=-\frac{5}{3}x+4 \end{cases}[/tex]


View image Lilith
We appreciate your presence here. Keep sharing knowledge and helping others find the answers they need. This community is the perfect place to learn together. Thank you for choosing IDNLearn.com. We’re dedicated to providing clear answers, so visit us again for more solutions.