I am back now!
So you need to use the two equations. By elimination method, you eliminate one of the variables.
Eqn 1 : 2x - y - 3z = 7
Eqn 2 : x + 2y + 2z = 0
Step 1Multiply Eqn by 2 and you'll be getting 4x - 2y -6
z =14 while Eqn 2 is still x +2y +2
z = 0.
Add both equations and you'll note that -2y cancels 2y. You'll thus be getting 5x - 4
z = 14
Make
z subject of formula to get
z = (5x - 14)/4
Now you need to find
z in terms of y. So you should eliminate the values of x.
Step 2Multiply Eqn 2 by -2 and you'll be getting -2x - 4y - 4
z = 0 while Eqn 1 remains 2x - y -3
z = 7
Add both equations and this time 2x will cancel -2x. Hence you'll obtain -5y - 7
z = 7
Again make
z subject of formula to get
z = (-5y - 7)/7
Now you equate all the equations of
z you obtained just like Requiem previously did.
Then you should make the coefficients of both x and y = 1
I guess by now, you'll be able to understand the workings of Requiem