Răspunsuri

2014-10-02T09:58:45+03:00
0.2x+2.25=7.35
0.2x=7.35-2.25
0.2x=5.1
x=5.1:0.2
x=25.5
2014-10-02T10:00:33+03:00
0.2 x + 1,5² = 7.35
0.2x + 2.25 = 7.35
0.2x = 7.35 - 2.25
0.2x  = 5.1
x = 5.1 : 0.2 ( amplific 5.1 : 0.2 cu 10 , pentru a crea nr. natural )
x = 51 : 2
x = 25.5