Răspuns :
1+[6/3-a/8]/2=2
⇒[6/3-a/8]/2=2-1
⇒[6/3-a/8]/2=1
⇒[6/3-a/8]=1·2
⇒[6/3-a/8]=2
⇒[2-a/8]=2
⇒2-a/8=2
⇒a/8=2-2
⇒a/8=0
⇒a-0·8
⇒a=0;
VERIFICARE 1+[6/3-0/8]/2=1+[2-0]/2=1+2/2=1+1=2;
⇒[6/3-a/8]/2=2-1
⇒[6/3-a/8]/2=1
⇒[6/3-a/8]=1·2
⇒[6/3-a/8]=2
⇒[2-a/8]=2
⇒2-a/8=2
⇒a/8=2-2
⇒a/8=0
⇒a-0·8
⇒a=0;
VERIFICARE 1+[6/3-0/8]/2=1+[2-0]/2=1+2/2=1+1=2;