posted by Eli .
Solve the system:
x + y + z = -1
2x + 2y + 5z = 1
5x + 2y + 3z = 8
what is the value of x in the solution?
By what method are you using. If not your calculator on matricies, then Irecommend the method of determinants.
Use simultaneous equation method:
Now, the equation 2 become:
Now equation 1 becomes
x=-y-3-1=-y-4; i.e, x=-y-4....(a)
equation 3 becomes:
Now the very first equation becomes