Ответы и объяснения

2013-05-14T09:05:45+00:00

1,54х-6,16-8,35+1,68=11,25

1,54х+1,68х=11,25+6,16+8,35

3,22х=25,76

х=8

2013-05-14T12:07:06+00:00

4(0,385x-1,54)-8,35+1,68x=11,25

1.54x-6.16-8.35+1.68x-11.25=0

1.54x-14.51+1.68x-11.25=0

3.22x-14.51-11.25=0

3.22x-25.76=0

x=25.76/3.22

x=8