Answered

Discover a world of knowledge at Westonci.ca, where experts and enthusiasts come together to answer your questions. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

How do you solve:

x-y=3
x-y=7

Sagot :

17dreven
If you are trying to solve those equations using the equal values method, you would first turn both the equations to equal y. So for x-y=3, you would add y to each side to get x=3+y and then subtract 3 from each side to get x-3=y. When you do the same thing to the equation x=y=7, you get x-7=y. When you plug them together you take away the y's and put an equal sign in between:
                     x-3=x-7  -then you would subtract x from any side and do that to the other side. You get -3=-7 which isn't correct so you would get a "no solution" problem.
[tex]\left\{\begin{array}{ccc}x-y=3\\x-y=7&/\cdot(-1)\end{array}\right\\\\+\left\{\begin{array}{ccc}x-y=3\\-x+y=-7\end{array}\right\\---------\\.\ \ \ \ \ \ \ \ 0=-4\ -\ FALSE\\\\Answer:no\ solution;\ x;\ y\in\O[/tex]
Thank you for visiting our platform. We hope you found the answers you were looking for. Come back anytime you need more information. We appreciate your time. Please come back anytime for the latest information and answers to your questions. We're glad you chose Westonci.ca. Revisit us for updated answers from our knowledgeable team.