Ответы и объяснения

2013-05-18T17:34:25+00:00
2013-05-19T00:18:39+00:00

5.9x-5.21=9.54

5.9x-14.75=0

x=14.75/5.9

x=2.5

 

(0.95x-1.82):1.7=3.4

0.95x-1.82=3.4*1.7

0.95x-1.82-5.78=0

0.95x-7.6=0

x=7.6/0.95

x=8