Le exercitiu

LagV · Posted: 29-01-2013, 16:55:41 | Translate post to: ... (Click for more languages)

Neatza lume!
As vrea si eu sa rezolvati acest exercitiu daca se poate:

Diferenta a doua numere este 22,3. Determinati-le, stiind ca suma lor este 28,56.

Stiu ca e usor dar... Sunt bolovan la mate. ( Bolovan cu media 10 la mate

)

BucovinA · Posted: 29-01-2013, 22:27:04 | Translate post to: ... (Click for more languages)

1.x+y = 28,56
2.x-y=22,3
Din (1) => x=28,56-y
Cu (1) in (2) => 28,56-y-y=22,3=>-2y=22,3-28,56=>
y=3,13
=> x= 28,56 - 3,13=>y=25,43

LagV · Posted: 30-01-2013, 21:57:18 | Translate post to: ... (Click for more languages)

BucovinA wrote:

1.x+y = 28,56
2.x-y=22,3
Din (1) => x=28,56-y
Cu (1) in (2) => 28,56-y-y=22,3=>-2y=22,3-28,56=>
y=3,13
=> x= 28,56 - 3,13=>y=25,43

Merci!