Răspunsuri

2014-11-05T22:18:24+02:00
+=+
(6x-10+7x+28)/14=(5x-7+14x)/14             ·14
13x+18=19x-7
13x-19x=-7-18
-6x=-25              (-1)
x=25/6=4,1(6)

c)+=-
6x+2+5x+25=9x-6-3x-3   ?2/5
d)
6x-5-6x-2=16x-12-15x-3
-7=x-15
-x=-15+7
-x=-8   (-1)
x=8