1— : 91— = — :x1x+ — x = 36.5 2883 — :3 —= 1 — :2434 — :7 —= 1 — :3851 — :1 —= 1 — :8541 — :1 —= 1 — :289xxxx 9
8× 9- 6.4x
8× 4- 2.5x
6 —1 x+ 42
23— = 0.2 — x0.4
= 3.4 = 1
=4.7
1 — : 8 1 — = — : x 1 x+ — x = 44 6 7 5 4 — : 7 — = 1 — : 3 8 4 1 — : 4 — = 1 — : 4 3 8 1 — : 1 — = 1 — : 8 6 3 1 — : 1 — = 1 — : 3 3 2 x x x x 9
8× 7 - 0.8x
3× 9 - 0.2x
4 —1 x + 43
9 — = 0.8 — x 0.6
= 10 = 0.5
=4.9
1 — : 5 1 — = — : x 1 x+ — x = 36.5 6 4 3 1 — : 3 — = 1 — : 6 4 6 1 — : 1 — = 1 — : 7 2 2 1 — : 7 — = 1 — : 3 6 3 1 — : 1 — = 1 — : 3 2 3 x x x x 4
2× 9 - 3.2x
9× 5 - 0.4x
4 —1 x - 85
25 — = 0.2 — x 0.4
= 3.2 = 3
=8.8
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