What is the volume of a box whose length is 12-2x, width is 7-2x, and height is x.

l*w*=height
12*7=84
2x=84
x=42

Is this right, check for me please

1 answer

volume = (12-2x)(7-2x)(x)

then you say ...
l*w*=height
12*7=84
2x=84
x=42

I haven't got the foggiest idea what that is supposed to be.