# Basic math equation help.

#### Nemestrine

In the equation

x = n / f

n is 1 kg m^-2 and f is 1 kg m^-1

What is x?

This is just confusing my poor brain, any help to understand would be much appreciated.

I put what I thought the answer was as x = 1 kg m^2 but I'm told the numerical value is correct but the unit is incorrect, am I being stupid here or am I missing something blatantly obvious?

Thanks for any help regarding this.

#### DarnItJimImAnEngineer

See the picture for an example of how to handle units in this case. You can think of most units as being a quantity multiplied by the number.

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#### mathman

Forum Staff
$\frac{kg}{m^2}/\frac{kg}{m}=\frac{1}{m}$ so $n/f=1/m$.