Răspunsuri

2014-11-16T14:28:49+02:00
2,(3)x=-3,5
x=(-3,5):[2,(3)]
x=(-35/10):(21/9)
x=(-35/10)(9/21)
x=-315/210
am si eu o intrebare. \ adica supra sau cum?
da...este supra
2014-11-16T14:30:58+02:00
3,(3)=(33-3)/9=30/9=10/3
10x/3+35/10=x
10x/3-x=-35/10 simplif
(10x-3x)/3=-7/2
7x/3=-7/2
2·7x=-7·3
14x=-21
x=-21/14 simplif
x=-3/2
x=-1,5