Ответы и объяснения

2012-05-18T02:35:20+04:00

8x+3y=9.30|*3

1.15x+0.9y=2.04|*10


24x+9y=27.9

11.5x+9y=20.4 |*(-1)

 

24x+9y=27.9

-11.5x-9y=-20.4

 

12.5x=7.5

x=0.6

3y=9.30-8x=9.30-4.8=4.5

y=4.5/3=1.5