Question

5x+2y=3
4x-2=2
y=-2x+4
y=4x-2y=2​

Answer 1

Respuesta:

Explicación paso a paso:

$5x+2y=3\\\\5x=3-2y\\\\\frac{5x}{5}=\frac{3}{5}-\frac{2y}{5}\\\\x=\frac{3-2y}{5}$

$4x-2=2\\\\4x=4\\\\\frac{4x}{4}=\frac{4}{4}\\\\x=1$

$\begin{bmatrix}x-2y=2\\ y=4\end{bmatrix}\\\\\begin{bmatrix}x-2\cdot \:4=2\end{bmatrix}\\\\\begin{bmatrix}x-8=2\end{bmatrix}\\\\y=4,\:x=10$