Question

3x+2y=14 sobre 2x+y=8 qual resposta desse sistema linear

Answer 1

$\left \{ {2x+y=8} \atop {3x+2y=14}} \right.$

$2x+y = 8$

$\boxed {y = 8 -2x}$

$3x +2y= 14$

$3x + 2 (8-2x) = 14$

$3x + 16 -4x = 14$

$16 -x =14$

$-x = 14 - 16$

$-1(-x) = -1(14 - 16)$

$x = 16 -14$

$\boxed {x=2}$

$\boxed {y = 8-2}$

$2(2)+y=8$

$4+y = 8$

$y = 8-4$

$\boxed {y= 4}$