1— : 61— = — :x1x+ — x = 9.5 3593 — :1 —= 1 — :4271 — :1 —= 1 — :7679 — :1 —= 1 — :8731 — :2 —= 1 — :738xxxx 2
2× 9- 0.4x
9× 8- 0.4x
2 —1 x+ 53
5 —= 1 — x0.4
= 0.8 = 2
=5.6
8 — : 6 — = 1 — : 7 7 3 10 — : 5 — = 1 — : 9 6 3 9 — : 1 — = 1 — : 8 9 2 1 — : 5 — = 1 — : 7 4 2 2 — : 1 — = 1 — : 3 5 3 x x x x x x+ —1 x = 37 28× 7 - 4x = 5 8× 4 - 0.5x = 72 —1 x + 7 =7.4 420 — = 8 — x 0.6
6 — : 1 1 — = — : x 1 x+ — x = 37.5 5 9 8 1 — : 8 — = 1 — : 7 9 6 2 — : 7 — = 1 — : 3 8 6 1 — : 1 — = 1 — : 7 9 2 8 — : 1 — = 1 — : 9 4 7 x x x x 3
7× 6 - 0.4x
7× 9 - 0.5x
2 —1 x + 82
17 — = 8 — x 0.8
= 8 = 6
=8.7
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