Which of the following equations , in it's simplest form , will be equivalent to 3x+2+(-5)? A: 2+3x+5. B: x-1+x-2+x C: -3-3x-1+x
D: 3-3x

The correct answer would be B: x-1+x-2+x

Step-by-step explanation:

First, you would do 2+(-5), from the given equation. Then, it could be simplified to 3x-3. Then, looking at B, you would add the like terms, meaning you would add all the x´s together, and the whole numbers together, giving you 3x-3. I hope I made this easy to understand for you!

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

i think the length is 12 and the width is 17