Question

2x +5y =1/3 ,1/4x + 25y = –1, x +y = 0 .

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Answer 1

Respuesta:

$\begin{bmatrix}2x+5y=\frac{1}{3}\\ \frac{1}{4}x+25y=-1\\ x+y=0\end{bmatrix}$

$\begin{bmatrix}\frac{1}{4}\cdot \frac{1-15y}{6}+25y=-1\\ \frac{1-15y}{6}+y=0\end{bmatrix}$

$\begin{bmatrix}\frac{1+585y}{24}=-1\\ \frac{1-9y}{6}=0\end{bmatrix}$

$\begin{bmatrix}\frac{1-9\left(-\frac{5}{117}\right)}{6}=0\end{bmatrix}$

$\begin{bmatrix}\frac{3}{13}=0\end{bmatrix}$

3/13=0 es falso