Question

4+2.[2+(6+a):3]-20=0​

Answer 1

4+2 ori [2+(6+a):3]-20=0
4+2 ori [2+(6+0):3]-20=a
6 ori (2+6:3)-20=a
6 ori (2+2)-20=a
6 ori 4 -20 =a
24 - 20 = a
4 = a

Sper ca te-am ajutat!