if i have something like

g/kg*year, can that be re written as g/kg/year?

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- Jul 14th 2010, 03:47 PMMottoV2quick question about division
if i have something like

g/kg*year, can that be re written as g/kg/year? - Jul 14th 2010, 03:58 PM1005
if you have

$\displaystyle \frac{A}{BC}$

it is equal to

$\displaystyle \frac{\frac{A}{B}}{C}$ where B and C are interchangeable

if you have $\displaystyle \frac{A}{B}C=\frac{AC}{B}=\frac{C}{B}A$

it is NOT equal to

$\displaystyle \frac{\frac{A}{B}}{C}=\frac{\frac{A}{C}}{B}$ - Jul 14th 2010, 07:13 PMWilmer
- Jul 15th 2010, 02:18 AMHallsofIvy
You need parentheses! Just "g/kg*year" could be interpreted as (g/kg)year or as g/(kg*year).

Similarly, "g/kg/year" could be either (g/kg)/year or as g/(kg/year).

(g/kg)year is the same as (g*year)/kg while g/(kg*year) is the same as (g/kg)/year. - Jul 15th 2010, 08:15 AMWilmer
Plus remember that g/(kg) = 1/k