My head hurts.
Okay, let's go back down to basic algebra.
6x+7y=9
y=3
Solve for x.
x+3y-4z=6
2x-2y+8z=2
x-4y+2z=1
Solve.
Okay, let's go back down to basic algebra.
6x+7y=9
y=3
Solve for x.
<Snipped quote by Nilesapa>
-2.
Now for something a little more hands on:
Find the measurements of the rectangular parallelepid (height, width, length) with the smallest possible perimeter (The sum of all it's sidesedges) and a surface of 48 area units.