Question

Jumatatea nr x intrece cu 6 jumatatea nr y.Stiind ca suma celor doua nr este 20 afla nr x si nr y (metoda grafica)Coroana

Answer 1

X,Y numerele
X : 2 =6+ Y :2 | ×2
X =12+y
X + Y = 20

X ________+12
Y ________

avem 2 segmente egale+12= 20
20 - 12 = 8
8: 2 = 4( un segment)
X = 4+12=16
Y = 4

Verificare:
16+ 4= 20
16: 2 = 4 :2 +6
8 = 8

X = 16
Y = 4

Answer 2

X:2= Y:2+6
X = Y+12
X + Y=20
Y+12+Y=20
12+2y=20
y =4
X=16