Question

3x+2=3 -x+5y=16 Con dos incógnitas

Answer 1

Respuesta:

x=-1 y=3

Explicación paso a paso:

$- x + 5y = 16 \\ - x = 16 - 5y \\ x = - 16 + 5y \\ 3x + 2y = 3 \\ 3 \times ( - 16 + 5y) + 2y = 3 \\ - 48 + 15y + 2y = 3 \\ - 48 + 17y = 3 \\ 17y = 3 + 48 \\ 17y = 51 \\ y = \frac{51}{17} = 3$

$x = - 16 + 5y = \\ = - 16 + 5 \times 3 = \\ - 16 + 15 = - 1$

$3( - 1) + 2 \times 3 = - 3 + 6 = 3 \\ 1 + 5 \times 3 = 1 + 15 = 16$

espero te sirva