Ответы и объяснения

2013-04-11T13:07:55+00:00

 x-0.64x=2.808

0.36 х = 2.808

х = 2.808 : 0.36

х = 7.8

 

 

7x+9x+0.32=2.72

16х = 2.4

х = 2.4 : 16

х = 0.15

 

 

 

 

 

 

2013-04-11T13:27:15+00:00

 x-0.64x=2.808

0.36 х = 2.808

х = 2.808 : 0.36

х = 7.8

7x+9x+0.32=2.72

16х = 2.4

х = 2.4 : 16

х = 0.15