Question

Aflati5 numere pare consecutive stiind ca daca le adunam cu dublul sumei lor obţinem 180

Answer 1

X+X+2+X+4+X+6+X+8+2(X+X+2+X+4+X+6+X+8)=180
5X+20+2X+2X+4+2X+8+2X+12+2X+16=180
15X+60=180
15X=120
X=8
NUMERELE SUNT:8,10,12,14,16

Answer 2

a + a + 2 + a + 4 + a + 6 + a + 8 =90

a = 70 : 5
a = 14
a + 2 = 16
a + 4 = 18
a + 6 = 20
a + 8 = 22

verificare = 14 + 16 + 18 + 20 + 22 = 90

verificare =  28 + 32 + 36 + 40 + 44 = 180