If an unbalanced force acts on an object you can expect that the

a…will experience some change in its velocity.
b…will not move.
c…will continue to move as it was originally.
d…will seek out its place of origin.
e…will experience some appreciable change in its mass.

Multiply the 3 dimensions, assuming it is a rectangular cuboid, to get the volume in cm³ divide mass by volume to get density in g/cm³

Make them both to where they have the denominator of 18that makes 3/2 equal 27/18 and 1/9 equal 2/18so now you have  27/18x+5=2/18subtract 5 from the other sideso now you have 27/18x+2/18-5then subtract 2/18 from 27/18 to get 25/18x=-5then divide 25/18 by -5 and your answer will be  -5/18