# Expression of an Equation

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• April 9th 2012, 04:35 PM
GrigOrig99
Expression of an Equation
Just a quick question. Is it correct to say that: $\frac{45 - (2/3)(r^2)}{r}$ = $\frac{45 - 3r^2}{2r}$
• April 9th 2012, 04:44 PM
skeeter
Re: Expression of an Equation
Quote:

Originally Posted by GrigOrig99
Just a quick question. Is it correct to say that: $\frac{45 - (2/3)(r^2)}{r}$ = $\frac{45 - 3r^2}{2r}$

no, more like ...

$\frac{45 - (2/3)(r^2)}{r} \cdot \frac{3}{3} = \frac{135 - 2r^2}{3r}$
• April 9th 2012, 05:04 PM
GrigOrig99
Re: Expression of an Equation
Ok, ty.