Question

Реши систему уравнений
{10x−2y=2
{−4x+4y=20
{x=
{y=

Answer 1

1

$x = frac{1}{5} + frac{1}{5}y \ - 4x + 4y = 20$

2

$- 4( frac{1}{5} + frac{1}{5} y) + 4y = 20 \ 16y = 104 \ y = frac{13}{2} \ y = 6.5$

3

$x = frac{1}{5} + frac{1}{5} times frac{13}{2} \ x = frac{1}{5} + frac{13}{10} \ x = frac{3}{2} \ x = 1 frac{1}{2 } \ x = 1.5$