Răspunsuri

2014-05-11T12:56:43+03:00
(x+3)*2.5=14.5
2.5x+7.5=14.5
2.5x=14.5-7.5
2.5x=7
x=7/2.5
x=2.8
2014-05-11T13:07:34+03:00
X=-3-2,5+14,5 <=>
x=-5,5+14,5 <=>
x=9
Sper ca te-am ajutat! :)