\(\left[5\left(20\right)-0\left(40\right)\right]I-+\left[0\right]J+\left[0\left(40\right)-\left(5\right)\left(-60\right)\right]K\)
\(+\left[5\left(30\right)\left(-2\right)\left(40\right)I-\left[4\left(-30\right)-\left(-2\right)\left(80\right)\right]+\left[4\left(40\right)-5\left(80\right)\right]K\right]\)
=\(\left(30I-40J+60\right)1bi\ pie\)