Răspunsuri

2014-11-12T10:33:50+02:00
X-7x=-6-12
-6x=-6 (·-1)
6x=6
x=6÷6
x=1
25x<=27-2
25x<=25
x<=1
2014-11-12T10:52:14+02:00
x-7x=-6-12
-6x= -18
6x=18
x=3
x=1
25x<=27-2
25x<=25
x<=1