Cubic centimetres since they are cubes. Did you add any picture of the question? There seems to be none.
Those two numbers are 30 and 12.
30+12=42
and
30*12=360
:P
12h-9h=3h move everything else to other side
3h=20-40+6
3h=-14
divide by 3
h=-14/3
Gross income is all a persons receipts and gains from all sources before any deductions.
