# Math Help - question about cramers rule

1. ## question about cramers rule

If I was to solve these equations by using cramers rule would I lay it out like the below matrix?

1/180V1 - 1/1800V2 = 0.005

-1/1800V1 + 41/36000V2 - 1/2400V3 = 16/6000

-1/2400V2 + 1/1500V3 = 6/12000

$
\begin{bmatrix}1/180&-1/1800&0\\-1/1800&41/36000&-1/2400\\0&-1/2400&1/1500\end{bmatrix}.
" alt="
\begin{bmatrix}1/180&-1/1800&0\\-1/1800&41/36000&-1/2400\\0&-1/2400&1/1500\end{bmatrix}.
" />

• Well, why would you not LCM them equations first:
Code:
  10V1 -   V2        =  9
-20V1 + 41V2 - 15V3 = 96
-  5V2 +  8V3 =  6
Justa suggestion...