a fost răspuns

[(x+270/3)5+100]/600=1

Răspuns :

[(x+90)*5+100]=600
[5x+450+100]=600
5x+450=500
5x=50
x=10
⇒(x+90)·5+100]/600=1
(5x+450+100)/600=1
(5x+550)/600=1
5(x+110)/600=1 simplificam cu ·5
(x+110)/120=1
x+110=120
x=120-110
x=10
verificare
(10+90)·5+100/600=1
600/600=1

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