Răspuns :
Răspuns:
[(X+90)•5+700]:600=2
(X+90)•5+700=2•600
(X+90)•5+700=1200
(X+90)•5=1200-700
(X+90)•5=500
X+90=500:5
X+90=100
X=100-90
X=10
Răspuns:
[(X+90)•5+700]:600=2
(X+90)•5+700=2•600
(X+90)•5+700=1200
(X+90)•5=1200-700
(X+90)•5=500
X+90=500:5
X+90=100
X=100-90
X=10