What is the solution of the system? Solve using matrices. 25 points x+2y=9 x+y=1

Mathematics

1 answer:

Novosadov [1.4K]2 years ago

4 0

Answer:

Step-by-step explanation:

<h2> soln</h2><h2>using by elimination method</h2><h2> 1|x+2y=9</h2><h2> 1| x+y=1</h2><h2> |x+2y=9</h2><h2> -|x+y=1</h2><h2> x-x+2y-y=9-1</h2><h2> 0+y=8</h2><h2> y=8</h2>

<h2>-x=7</h2><h2>divide -1 both side with the make value of x</h2><h2>x=-7</h2><h2>therefore x=-7 and y=8. this is my answer</h2>

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