Question

2m - 3n = 5
M + 4n =8
Cuál es la variable a eliminar primero?...porfis​

Answer 1

Explicación paso a paso:

$\begin{bmatrix}2m-3n=5\\ m+4n=8\end{bmatrix}\\\\\\\mathrm{Sustituir\:}m=\frac{5+3n}{2}\\\\\\\begin{bmatrix}\frac{5+3n}{2}+4n=8\end{bmatrix}\\\\\\\begin{bmatrix}\frac{5+11n}{2}=8\end{bmatrix}\\\\\\m=\frac{5+3\cdot \:1}{2}\\\\\\m=4\\\\\\m=4,\:n=1\:\:\:\: SENCILLO\\\\\\NOSENADAOFICIAL$