Westonci.ca makes finding answers easy, with a community of experts ready to provide you with the information you seek. Get expert answers to your questions quickly and accurately from our dedicated community of professionals. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.
Sagot :
[tex]\left\{\begin{array}{ccc}-5x-8y=17\\2x-7y=-17\end{array}\right\\\left\{\begin{array}{ccc}-5x=8y+17&/\cdot(-2)\\2x-7y=-17&/\cdot5\end{array}\right\\\\\left\{\begin{array}{ccc}10x=-16y-34\\10x-35y=-85\end{array}\right\\\\substitute:\\\\-16y-34-35y=-85\\-51y=-85+34\\-51y=-51\ \ \ \ /:(-51)\\y=1\\\\10x=-16\cdot1-34\\10x=-50\ \ \ \ /:10\\x=-5\\\\Solution:x=-5\ and\ y=1[/tex]
[tex]-5x=17+8y \\ x= - \frac{17+8y}{5} \\ 2x-7y=-17 \\ 2* \frac{17+8y}{5} -7y=-17 \\ \frac{34+16y}{5} -7y=-17 \ we \ bring \ to \ the \ same \ denominator \ \\34+16y-35y=-85 \\ -19y=-85-34 \\ 19y=119 \\ y= \frac{119}{19} \\ x= -\frac{ 17+ 8* \frac{119}{19} }{5} \\ x= - \frac{ 17 + \frac{952}{19} }{5} \\ x= - \frac{ \frac{323+952}{19}}{5} \\ x= -\frac{ \frac{1275}{19} }{5} \\ x= -\frac{1275}{19} * \frac{1}{5} \\ x= -\frac{255}{19}[/tex]
We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. Thank you for your visit. We're dedicated to helping you find the information you need, whenever you need it. We're glad you visited Westonci.ca. Return anytime for updated answers from our knowledgeable team.