Răspunsuri

2014-11-08T13:07:06+02:00
72:(x-2)=9
Consideram x-2 = a
72 : a = 9 
a = 72 : 9
a = 8
x-2 = 8
x = 10
72:(x-2)=9
72:9=8
x-2=8
x=8+2
x=10
72:(10-2)=9
Mulțumesc!
2014-11-08T13:12:39+02:00