(3x-y+z=-1
2x+3y+z=4
5x+4y+2z=5

The answer to the above system of equations is

x = -1

y = 1

z = 3

Step-by-step explanation:

Let's multiply the first equation by 2 then subtract the 3rd equation from the first:

Now let's subtract the second equation from the first

Now let's subtract our two new equations with two variables

Let's now substitute y equals 1 into one of the new equations x - 6y = -7

Now that we have answers for x and y we can substitute them into any of the first three original equations above

Now let's check by plugging in our values x = -1, y = 1 and

z = 3 into any of the other 3 equations

answer: no

step-by-step explanation: