Question

solve the linear equation for each variable.
-0.429p+0.231q=1920lb
-0.857p-0.923q-0.923r=2880lb
0.286p-0.308q-0.385r=2160lb

Answer 1

{p = 405.228, q = 9064.25, r = -12560.8}

Answer 2

how did you get that?

Answer 3

Used the Mathematica 8 program. Refer to the attachment.

Answer 4

Correction: "the the" in the last sentence should have been typed, "that the"