Question

3+{4•[2+(6+a):3]-17}•7=24 rezolvarea in doua moduri

Answer 1

3+{4•[2+(6+a):3]-17}•7=24
    {4•[2+(6+a):3]-17}•7=24-3=21
   {4•[2+(6+a):3]-17} = 21:7 = 3 
   4•[2+(6+a):3] = 3+17 = 20
   [2+(6+a):3] = 20:4 = 5
   (6+a):3 = 5-2 = 3
   6+a = 3*3=9
       a = 9 - 6 = 3
       a = 3