Question

suma a 3 nr este 3600. daca din fiecare se scade acelasi nr obtinem nunerele 1120,1130 si 1140 . calculați numerele initiale

Answer 1

x+y+z=3600

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x-d=1120

y-d=1130

z-d=1140

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x-d+y-d+z-d=3390

(x+y+z)-3d=3390

3600-3d=3390

3d=3600-3390

3d=210

d= 210 | : 3

d=70

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x=1120+70=1190

y=1130+70=1200

z=1140+70=1210