Răspunsuri

2013-11-30T09:05:49+02:00
324:6x3+41:6x3-a:6x3+127=307
162+20.5-a:2=307-127
182.5-a:2=180
-a:2=180-182.5
-a:2= -2.5 l x(-2)
a=5