Răspunsuri

2014-04-24T17:43:24+03:00
X- numar
x+11.7=S - de la suma
Sx2=P - de la produs
P-2.4=35

P=35+2.4
P=37.4

Sx2=37.4
S=37.4:2
S=18.7

x+11.7=18.7
x=18.7-11.7
x=7
7 3 7
2014-04-24T17:51:49+03:00
X=numar necunoscut 
x+11,7=y
yX(ori)2=z
z-2,4=35
z=37,4
y X 2=37,4⇒y=13,7
x=13,7-11,7
x=2
1 1 1