Answered

Welcome to Westonci.ca, where your questions are met with accurate answers from a community of experts and enthusiasts. Discover in-depth solutions to your questions from a wide range of experts on our user-friendly Q&A platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

how to solve x-4y=11 and 5x-7y=-10 using elimination

Sagot :

kate200468
[tex]x-4y=11\ /\cdot(-5)\\5x-7y=-10 \\\\-5x+20y=-55\\5x-7y=-10\\--------\\-5x+20y+5x-7y=-55-10\\13y=-65\ /:13\\y=-5\\\\[/tex]

[tex]x-4y=11\ /\cdot7\\5x-7y=-10\ /\cdot(-4) \\\\7x-28y=77\\-20x+28y=40\\---------\\7x-28y-20x+28y=77+40\\-13x=117\ /:(-13)\\x=-9\\\\Ans.\ \ x=-9\ \ and\ \ y=-5[/tex]
We appreciate your time on our site. Don't hesitate to return whenever you have more questions or need further clarification. Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Thank you for trusting Westonci.ca. Don't forget to revisit us for more accurate and insightful answers.