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Solve each system.$$\begin{aligned}x-y+z &=2 \\y-z &=3 \\x &=4\end{aligned}$$
$\phi$
Algebra
Algebra 2
Chapter 4
Systems of Linear Equations
Section 3
Systems of Linear Equations in Three Variables
Polynomials
Systems of Equations and Inequalities
Introduction to Algebra
Graph Linear Functions
Write Linear Equations
Linear Equations and Functions
Matrices and Determinants
University of California, Berkeley
University of Washington
Oregon State University
University of Michigan - Ann Arbor
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All right, So this system will get a tax minus. Why? Z becomes, too, while I minus a Z equals three and X equals four. So we actually plug acts into this first equation. He was four. Minus y plus d equals to what you're going to give us. Z minus y equals negative, too. Now we have, um Why mine is equals three Z minus. Wife was negative two. So we can see if there's a solution here with the Z equals Y minus two. Club that into this first equation, we're gonna have Why, Linus? Why? Minus two equals three that's going to give us, um, to This is a 32 equals three, which isn't the case. Right. So we know that there are no solutions, because why minuses? E z minus one z minus. Why our, um It's the same thing. Multiple about negative one. So this answer would have to be the inverse of this, right? It would have to be negative two and two. Or I guess, in this case, negative two here and two here or this is three. Doesn't have to be negative
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