Question

2x - 9y+ 5z from 7x + 3y-8z

subtract please please please send me the answer ​

Answer 1

Answer:

5z-6y-3z

Step-by-step explanation:

hope you will get it

Answer 2

Answer:

2x+3y+5z=9,

7x+3y−2z=8,

2x+3y+λz=μ

Now, for infinitely many solutions. If 2 equations out of 3 are same then we are left with only 2 equations with 3 variables, this will give infinite solutions. Now if λ=5, μ=9, then equation (i) and (iii) will be same and the system will have infinite solutions.

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