*Răspuns*
x=4
Explicație pas cu pas:
[(x-2+3) • 4:5+6]+7=9+8=17
[(×-2+3)•4:5+6]= 17-7=10
(x-2+3)•4:5=10-6=4
(x-2+3)•4=4•5=20
x-2+3=20:4=5
x-2=5-3=2
x-2=2
x=2+2=4
