Question

$5x-7y=190\\8x+11y=173$

Answer 1

$x=\frac{19+7\cdot \frac{713}{111}}{5}$5x - 7y = 190

8x + 11y = 173

$\begin{bmatrix}5x-7y=19\\ 8x+11y=173\end{bmatrix}$

PASO 1:

$\begin{bmatrix}8\cdot \frac{19+7y}{5}+11y=173\end{bmatrix}$

PASO 2:

$\begin{bmatrix}\frac{152+111y}{5}=173\end{bmatrix}$

PASO 3:

$x=\frac{19+7\cdot \frac{713}{111}}{5}$

PASO 4:

$x=\frac{1420}{111}$

SOLUCIÓN:

$x=\frac{1420}{111},\:y=\frac{713}{111}$

TuProfesor17