Răspuns:
a)(285-81):2+(x•5-70)•6=732
204:2+(x•5-70)•6=732
102+(x•5-70)=732|:6
x•5-70=122|-102
x•5=20|+70
x=90|:5
x=18
b)[495-(x:3)]=975
[495-(x:3)]=975|:5
(495-x)=195|•3
x=585|+495
x= 1080