H=1
1) Let's solve for H in this expression:
[tex]\begin{gathered} 160=4\cdot9\cdot4+2\cdot8\cdot H \\ 160=144+16H \\ 160-144=16H+144-144 \\ 16=16H \\ \frac{16}{16}=\frac{16H}{16} \\ H=1 \end{gathered}[/tex]Note that we multiplied, those factors and then isolated H on one side.
2) Hence, the answer is H=1
