Răspuns :
a+a+2+a+4+a+6+a+8=575
5a+20=575
5a=575-20=555
a=555:5=111
a=111
b=113
c=115
d=117
e=119
5a+20=575
5a=575-20=555
a=555:5=111
a=111
b=113
c=115
d=117
e=119
a+b+c+d+e=575. a=|_|. b=|_|+2|. c=|_|+2|+2|. d=|_|+2|+2|+2|. e=|_|+2|+2|+2|+2|. 575-2×10=575-20=555. 555:5=111 (a). 111+2=113 (b). 111+2+2=115 (c). 111+2+2+2=117 (d). 111+2+2+2+2=119 (e).