Answered

Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Get immediate and reliable answers to your questions from a community of experienced experts on our platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

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]
Visit us again for up-to-date and reliable answers. We're always ready to assist you with your informational needs. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Stay curious and keep coming back to Westonci.ca for answers to all your burning questions.