Răspunsuri

2014-04-24T10:08:43+03:00
6c+7p=11.4 / *-7
7c+6p=10.7/ *6

-42c-49p=-79.8
42c+36p=64.2
------------------------(+)
/   -13p=-15.6
 p=1.2      

6c+7*1.2=11.4
6c+8.4=11.4
6c=11.4-8.4
6c=3
c=3:6
c=0.5