Răspuns:
205+612:[120-9x(34-48:ax4)]=211
612:[120-9x(34-48:ax4)]=211-205
612:[120-9x(34-48:ax4)]=6
612:6=120-9x(34-48:ax4)
120-9x(34-48:ax4)=102
120-102=9x(34-48:ax4)
9x(34-48:ax4)=18
34-48:ax4=18:9
34-48:ax4=2
34-2=48:ax4
48:ax4=32
48:a=32:4
48:a=8
a=48:8
a=6
Explicație pas cu pas: