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a fost răspuns

10=9+8-7+6-5+4-3+2-1

10+8+6+4+2-(9+7+5+3+1)=

Răspuns :

Primăvară2017
10=9+8-7+6-5+4-3+2-1
10=17-7+6-5+4-3+2-1
10=10+6-5+4-3+2-1
10=16-5+4-3+2-1
10=11+4-3+2-1
10=15-3+2-1
10=12+2-1
10=14-1
10=13 (fals)


10+8+6+4+2-(9+7+5+3+1)=
18+6+4+2-(16+5+3+1)=
24+4+2-(21+3+1)=
28+2-(24+1)=
30-25=
5

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