Răspunsuri

2014-05-12T16:53:57+03:00
12 * ( 9 - x ) = 12 * 9 - (12 * 9 )*1.2
108 -12x = 108  - 129.6
12x  = 129.6 => x = 10.8
2014-05-12T17:02:37+03:00
12*(9-x)=12*9-(12*9)*1,2
108-12x=108-129,6
12=129,6=X=10,8