Answered

Uncover valuable information and solutions with IDNLearn.com's extensive Q&A platform. Our platform provides detailed and accurate responses from experts, helping you navigate any topic with confidence.

Solve the system using elimination.

7x + 5y = 15
–6x – 4y = –14 

A.(–6, 7)
B.(5, -4)
C.(7, –7)
D.(–4, 5)

Sagot :

Luanaidn
[tex] \left \{ {{7x+5y=15\ \ |*4} \atop {-6x-4y=-14\ \ |*5}} \right. \\\\ \left \{ {{28x+20y=60} \atop {-30x-20y=-70}} \right. \\+------\\ -2x=-10\ \ \ |Divide\ by\ -2\\ x=5\\\\ 5y=15-7x\\ 5y=15-7*5\\ 5y=15-35\\ 5y=-20\ \ \ |:5\\ y=-4\\\\\ Solution\ is\ B(5,-4).[/tex]
Your engagement is important to us. Keep sharing your knowledge and experiences. Let's create a learning environment that is both enjoyable and beneficial. IDNLearn.com has the solutions to your questions. Thanks for stopping by, and see you next time for more reliable information.