Question

afla valoarea lui a :
a) 27:[26+(6ori a -7ori 3 ) :9]+(13-2ori2orii3)=2 
b) 5+[16-(9:a ori 8 +7)] ori6 =4:(1ori 2)+(3ori3)

Answer 1

27:[26+(6*a-21):9]+1=2   ,[26+(6*a-21):9]+1=54   ,[26+(6*a-21):9]=53,    (6*a-21):9=27     6*a-21=243,   6*a=264     a=44,