Составители:
28
2x
1
–
x
2
+
5x
3
–
x
4
+
9x
5
=
84
x
1
–
x
2
+
3x
3
+
x
4
+
2x
5
=
38
3x
1
–
2x
2
+
5x
3
+
2x
4
+
5x
5
=
83
x
1
–
2x
2
+
8x
3
+
x
4
+
5x
5
=
80
4x
1
+
x
2
–
3x
3
–
5x
4
–
12x
5
=
53
;
8)
2x
1
+
5x
2
+
3x
3
+
5x
4
+
9x
5
=
182
x
1
+
2x
2
+
x
3
+
4x
4
+
2x
5
=
74
3x
1
+
7x
2
+
x
3
+
11x
4
+
5x
5
=
197
x
1
+
x
2
+
4x
3
+
4x
4
+
5x
5
=
116
3x
1
+
11x
2
–
9x
3
+
10x
4
–
4x
5
=
62
;
7)
x
1
–
3x
2
+
3x
3
+
2x
4
–
4x
5
=
4
3x
1
–
8x
2
+
5x
3
+
9x
4
–
13x
5
=
– 14
x
1
–
x
2
–
4x
3
+
6x
4
–
4x
5
=
– 34
3x
1
–
4x
2
–
4x
3
+
8x
4
–
4x
5
=
– 25
2x
1
–
5x
2
+
5x
3
+
2x
4
–
3x
5
=
22
;
6)
x
1
+
2x
2
–
2x
3
+
x
4
+
2x
5
=
8
3x
1
+
7x
2
–
10x
3
+
6x
4
+
5x
5
=
41
x
1
+
4x
2
–
9x
3
+
5x
4
+
2x
5
=
37
3x
1
+
7x
2
–
8x
3
+
x
4
+
11x
5
=
32
x
1
+
5x
2
–
6x
3
–
5x
4
+
14x
5
=
20
;
5)
x
1
+
3x
2
+
7x
3
+
5x
4
+
3x
5
=
55
3x
1
+
10x
2
+
17x
3
+
18x
4
+
8x
5
=
153
5x
1
+
22x
2
+
8x
3
+
45x
4
+
9x
5
=
196
3x
1
+
8x
2
+
27x
3
+
7x
4
+
16x
5
=
193
x
1
+
1x
2
+
16x
3
–
3x
4
+
7x
5
=
85
;
4)
3x
1
+
10x
2
+
16x
3
–
12x
4
+
5x
5
=
12
2x
1
+
8x
2
+
13x
3
–
3x
4
+
4x
5
=
30
x
1
–
2x
2
+
5x
3
–
5x
4
+
2x
5
=
3
2x
1
+
5x
2
+
11x
3
–
12x
4
+
11x
5
=
50
3x
1
+
12x
2
+
21x
3
–
2x
4
+
8x
5
=
68
;
3)
2x
1
+
7x
2
+
4x
3
+
x
4
+
4x
5
=
74
x
1
+
3x
2
+
x
3
–
2x
4
+
2x
5
=
12
2x
1
+
3x
2
+
x
3
–
14x
4
+
15x
5
=
– 45
3x
1
+
10x
2
+
4x
3
–
3x
4
+
5x
5
=
65
2x
1
+
9x
2
+
6x
3
+
6x
4
+
3x
5
=
127
;
2)
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