4— : 51— = — :x1x- — x = 34 5468 — :9 —= 1 — :7891 — :1 —= 1 — :3269 — :4 —= 1 — :8551 — :1 —= 1 — :423xxxx 9
9× 7- 0.5x
9× 8- 0.4x
5 —1 x- 84
24— = 0.8 — x0.6
= 4.3 = 1.5
=8.6
7 — : 1 1 — = — : x 1 x+ — x = 39 8 5 9 1 — : 1 — = 1 — : 2 6 4 1 — : 5 — = 1 — : 8 6 6 1 — : 5 — = 1 — : 7 4 9 7 — : 2 — = 1 — : 8 3 4 x x x x 5
3× 6 - 6.4x
9× 4 - 0.2x
1 —1 x + 85
3 — = 6.4 — x 0.9
= 1.7 = 5
=8.2
1 — : 1 1 — = — : x 1 x+ — x = 9.5 6 2 8 1 — : 1 — = 1 — : 7 2 9 5 — : 8 — = 1 — : 4 9 9 1 — : 7 — = 1 — : 2 8 5 1 — : 3 — = 1 — : 3 4 8 x x x x 2
6× 9 - 6.4x
6× 6 - 1.6x
2 —1 x + 93
17 — = 8 — x 0.9
= 8.9 = 4
=9.8
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