Question

Afla 4 nr consecutive pare stiind ca suma dintre primul si ultimul numar este 558

Answer 1

x=primul numar
x+2= al doilea nr
x+4=al treilea nr
x+6= al patrulea nr
x+x+6=558
2x+6=558
2x=558-6
2x=552
x=552:2
x=276

deci:  276, 278, 280, 282

Answer 2

a,a+2,a+4,a+6 nr consecutive pare
a+a+6=558
2a+6=558
2×a=558-6
2×a=552
a=552:2
a=276
numerele sunt :276,278,280 si 282
Proba: 276+282=558