Question

Rezolvati prin metoda reducerii
3x-2y=0
4x+3y=-10
cat e x si cat e y
Dau coroana

Answer 1

3x-2y=0      |·4

4x+3y= -10  |·3

Sistemul devine:

12x-8y=0

12x+9y= -30

-----------------  -

-17y= 30

$y=$$-\frac{30}{17}$

3x+2·$\frac{30}{17} =0$

3x+$\frac{60}{17}$=0

x=$-\frac{60}{51}$  (simplificam cu 3)

x=$-\frac{20}{17}$