3 — :1 —= 1 — :2691 — :1 —= 1 — :3994 — :1 —= 1 — :3374 — :4 —= 1 — :5348 — :10— = 1 — :798 xxxxxx-—1x = 18.525× 5- 8x = 6.2 8× 7- 5x = 3.55 —1 x- 5 =5.5412— = 0.2 — x0.4
5 — : 5 — = 1 — : 4 4 6 8 — : 6 — = 1 — : 9 5 2 1 — : 1 — = 1 — : 8 3 4 5 — : 7 — = 1 — : 4 8 4 2 — : 10 — = 1 — : 3 9 4 x x x x x x- —1 x = 34.5 67× 7 - 6.4x = 0.1 5× 6 - 8x = 21 —1 x - 6 =6.3 314 — = 3.2 — x 0.9
8 — : 3 — = 1 — : 7 2 4 2 — : 1 — = 1 — : 3 9 3 8 — : 1 — = 1 — : 7 2 8 1 — : 6 — = 1 — : 3 7 2 1 — : 1 — = 1 — : 3 4 5 x x x x x x- —1 x = 24 82× 6 - 4x = 2.1 3× 5 - 6.4x = 5.51 —1 x - 5 =5.5 25 — = 2 — x 0.5
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