a
,
b
g
c
d
(
9
8
7
,
6
1
0
)
1
9
8
7
=
6
1
0
×
1
+
3
7
7
6
1
0
=
3
7
7
×
1
+
2
3
3
3
7
7
=
2
3
3
×
1
+
1
4
4
2
3
3
=
1
4
4
×
1
+
8
9
1
4
4
=
8
9
×
1
+
5
5
8
9
=
5
5
×
1
+
3
4
5
5
=
3
4
×
1
+
2
1
3
4
=
2
1
×
1
+
1
3
2
1
=
1
3
×
1
+
8
1
3
=
8
×
1
+
5
8
=
5
×
1
+
3
5
=
3
×
1
+
2
3
=
2
×
1
+
1
2
=
1
×
2
+
0
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
1
=
9
8
7
×
2
3
3
+
6
1
0
×
(
-
3
7
7
)
9
8
7
=
9
8
7
×
1
+
6
1
0
×
0
6
1
0
=
9
8
7
×
0
+
6
1
0
×
1
3
7
7
=
9
8
7
×
1
+
6
1
0
×
(
-
1
)
2
3
3
=
9
8
7
×
(
-
1
)
+
6
1
0
×
2
1
4
4
=
9
8
7
×
2
+
6
1
0
×
(
-
3
)
8
9
=
9
8
7
×
(
-
3
)
+
6
1
0
×
5
5
5
=
9
8
7
×
5
+
6
1
0
×
(
-
8
)
3
4
=
9
8
7
×
(
-
8
)
+
6
1
0
×
1
3
2
1
=
9
8
7
×
1
3
+
6
1
0
×
(
-
2
1
)
1
3
=
9
8
7
×
(
-
2
1
)
+
6
1
0
×
3
4
8
=
9
8
7
×
3
4
+
6
1
0
×
(
-
5
5
)
5
=
9
8
7
×
(
-
5
5
)
+
6
1
0
×
8
9
3
=
9
8
7
×
8
9
+
6
1
0
×
(
-
1
4
4
)
2
=
9
8
7
×
(
-
1
4
4
)
+
6
1
0
×
2
3
3
1
=
9
8
7
×
2
3
3
+
6
1
0
×
(
-
3
7
7
)