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112+213+314+415+516+617+718.

题目详情
1
1
2
+2
1
3
+3
1
4
+4
1
5
+5
1
6
+6
1
7
+7
1
8
1
1
2
+2
1
3
+3
1
4
+4
1
5
+5
1
6
+6
1
7
+7
1
8
1
2
1122
1
3
1133
1
4
1144
1
5
1155
1
6
1166
1
7
1177
1
8
1188
▼优质解答
答案和解析
1
1
2
+2
1
3
+3
1
4
+4
1
5
+5
1
6
+6
1
7
+7
1
8

=(1+2+3+4+5+6+7)+(
1
2
+
1
3
+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
2
111222+2
1
3
+3
1
4
+4
1
5
+5
1
6
+6
1
7
+7
1
8

=(1+2+3+4+5+6+7)+(
1
2
+
1
3
+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
3
111333+3
1
4
+4
1
5
+5
1
6
+6
1
7
+7
1
8

=(1+2+3+4+5+6+7)+(
1
2
+
1
3
+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
4
111444+4
1
5
+5
1
6
+6
1
7
+7
1
8

=(1+2+3+4+5+6+7)+(
1
2
+
1
3
+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
5
111555+5
1
6
+6
1
7
+7
1
8

=(1+2+3+4+5+6+7)+(
1
2
+
1
3
+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
6
111666+6
1
7
+7
1
8

=(1+2+3+4+5+6+7)+(
1
2
+
1
3
+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
7
111777+7
1
8

=(1+2+3+4+5+6+7)+(
1
2
+
1
3
+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
8
111888,
=(1+2+3+4+5+6+7)+(
1
2
+
1
3
+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
2
111222+
1
3
+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
3
111333+
1
4
+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
4
111444+
1
5
+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
5
111555+
1
6
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
6
111666+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
7
111777+
1
8
),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
8
111888),
=28+(
1
2
+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
2
111222+
1
3
+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
3
111333+
1
6
)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
6
111666)+(
1
4
+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
4
111444+
1
5
+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
5
111555+
1
7
+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
7
111777+
1
8
),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
8
111888),
=28+(
1
2
+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
2
111222+
1
3
+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
3
111333+
1
2
-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
2
111222-
1
3
)+
201
280

=29+
201
280


=29
201
280
1
3
111333)+
201
280

=29+
201
280


=29
201
280
201
280
201201201280280280,
=29+
201
280


=29
201
280
201
280
201201201280280280,

=29
201
280
201
280
201201201280280280.