Răspunsuri

2014-10-15T15:29:09+03:00
2014-10-15T15:30:08+03:00
2·x+2·1=18
2·x=18-2
2x=16
x=16÷2 (sau supra,mai bine supra)
x=8
Modul 1:2(x+1)=18
x+1=18:2
x+1=9
x=9-1
x=8
Modul 2:2·x+2·1=18
2·x=18-2
2x=16
x=16÷2
x=8
Merge şi cum am spus eu :)
da